CN104753815A - Flow cache based transparent transmission acceleration network and method - Google Patents

Abstract

The present invention provides a transparent transmission acceleration method based on stream cache, which includes: the data entry node server fragments the data flow sent by the receiving client or the source station to obtain multiple data fragments; the data entry node server Each of the data fragments is processed to obtain key values that can represent the data fragments; the data entry node server sends all key values to the data exit node server; the data exit node server restores the corresponding key values according to these key values Data sharding: the data export node server splices the multiple data shards into complete data and sends it to the source station or client.

Description

A transparent transmission acceleration network and method based on flow cache

technical field

The invention relates to an acceleration technology for transparent transmission of network data, in particular to an acceleration technology for TCP data transmission of various application protocols.

Background technique

Network data transparent transmission technology means that during the transmission process, the transmission network is transparent to the outside world. Regardless of the business to be transmitted, the transparent transmission network is only responsible for transmitting the business that needs to be transmitted to the destination node, while ensuring the quality of the transmission. business is processed.

Therefore, the existing transparent transmission technology has the following major drawbacks:

1. When the client uploads or downloads the same file multiple times, due to the relationship of the transparent transmission network, the application acceleration network does not analyze the application layer protocol, but only performs transparent transmission. Therefore, it does not know what data the client requests, so each Complete data needs to be transmitted every time, making the transmission time long. Fig. 1 shows a transparent transmission network framework in the prior art. It can be seen from the figure that all data is transmitted between the client and the edge node, between nodes, or between the node and the origin server.

2. Even if it is an HTTP cache, if the client requests files with different URLs, and although the URLs of these files are different, only a small part of the data changes in essence, and there are many duplicate data, then the cache still cannot be hit. That is to say, although there is a large amount of data duplication, the client still cannot obtain data from the cache due to different URLs, and must go back to the origin site to retrieve the data and transmit the complete data.

3. Existing stream caching applications are generally applied to bilateral acceleration, for example, by adding client gateways and source gateways for acceleration. For this kind of bilateral acceleration, the client and the source end need to synchronize the data flow warehouse in advance. But for the application acceleration network, due to the many-to-many network environment, pre-synchronizing the data flow warehouse may waste space and consume resources. In addition, the newly added data stream cache must wait for synchronization before it can be hit, and it is necessary to manage which data is cached by which device, and the management complexity is high.

Therefore, there is an urgent need for a transparent acceleration method that can solve the above drawbacks in the existing network data transparent transmission technology.

Contents of the invention

In order to reduce the data transmission time in the transparent transmission network, reduce the amount of data in the transmission process, and save network bandwidth, the present invention provides a transparent transmission acceleration network and method based on stream cache.

The present invention provides a method for accelerating transparent transmission based on stream cache, the method comprising the following steps:

The data entry node server fragments the data stream sent by the receiving client or the source station to obtain multiple data fragments;

The data entry node server processes each data fragment to obtain a key value that can represent the data fragment;

The data entry node server sends all key values to the data exit node server;

The data export node server restores the corresponding data fragments according to these key values;

The data egress node server splices the multiple data fragments into complete data and sends it to the source station or the client.

In one embodiment, the step of the data egress node server splicing the plurality of data fragments into complete data and sending it to the terminal further includes:

The data export node server judges whether there is a data fragment corresponding to the key value in the local cache;

If the data egress node server determines that there is no data fragment corresponding to the key value in the local cache, it returns information indicating that the key value is missing to the data ingress node, and the data ingress node server receives the information indicating that the key is missing Value information to the data export node server to send the missing key value and the data fragmentation corresponding to the missing key value; the data export node server uses the data fragmentation corresponding to the missing key value to Stitch the complete data and send it to the terminal, and at the same time cache the data fragment corresponding to the missing key value;

If the data egress node server determines that there is a data fragment corresponding to the key value in the local cache, then the multiple data fragments are spliced into complete data and sent to the terminal.

In one embodiment, the data entry node server processes each data fragment, and the step of obtaining a key value that can represent the data fragment includes:

The data entry node server encodes each of the data fragments.

In one embodiment, each data segment may be of variable length.

In one embodiment, before the data egress node server restores the corresponding data fragments according to the key values, the following steps are further included:

The data egress node server determines whether the received key value is only the key value, or the missing key value and the data fragment corresponding to the missing key value.

The present invention also provides a transparent transmission acceleration network based on flow cache, including a data entry node server and a data exit node server, wherein,

The data entry node server is configured to fragment the data stream sent by the receiving client or the source station to obtain multiple data fragments; process each data fragment to obtain the key that can represent the data fragment value; send all key values to the data export node server;

The data export node server is configured to restore corresponding data fragments according to the key values; splice the multiple data fragments into complete data and send it to the source station or the client.

In one embodiment, the data entry node server includes:

The data receiving module is configured to receive the data stream sent by the client or the source station;

The data processing module is configured to fragment the received data stream according to a certain algorithm to obtain multiple data fragments, and encode each data fragment to obtain a key value that can represent the data fragment;

a data caching module configured to cache the data fragment;

The key value sending module is configured to send all key values to the data export node server.

The missing key value receiving module is configured to determine whether to receive the information indicating that the key value is missing returned by the data export node server;

The key value and the corresponding data fragment sending module is configured to, if the information indicating that the key value is missing is received from the data export node server, then the missing key value and the data corresponding to the missing key value The fragments are sent to the data egress node server.

In one embodiment, the data egress node server includes:

A data receiving module configured to receive the key value sent by the data entry node, and/or the missing key value and the data fragment corresponding to the missing key value;

The data distinguishing module is configured to distinguish whether the received key value is the missing key value and the data fragment corresponding to the missing key value; if the data distinguishing module judges that the received key value is only the key value, then send the key value to the data parsing module; if the data distinguishing module judges that what is received is the missing key value and the data fragment corresponding to the missing key value, then the missing key value The corresponding data fragmentation is sent to the data splicing module, and at the same time, the data fragmentation corresponding to the missing key value is cached to the data caching module, so that if the same data is transmitted next time, it is not necessary to be regenerated by the data entry node server. Send data, but get it directly from the local cache;

The data parsing and cache lookup module is configured to parse the key value and use the key value to find out from the data cache module whether there is a data fragment corresponding to the key value cached locally;

The data splicing module is configured to, if a cache of data fragments corresponding to the key value is found locally, then use the cached data fragments to concatenate complete data and send it to the terminal; if the data distinguishing module judges that the received If the missing key value and the data fragment corresponding to the missing key value are received, the data splicing module is further configured to use the data fragment corresponding to the missing key value to stitch complete data and send it to the terminal;

The missing key value sending module is configured to send information indicating that the key value is missing to the data entry node server if the data parsing and cache lookup module does not find the cache of the data fragment locally.

The present invention also provides a data entry node server in a flow cache-based transparent transmission acceleration network. The data entry node server is configured to fragment the data flow sent by the receiving client or the source station to obtain multiple data fragments. slice; each data slice is processed to obtain a key value that can represent the data slice; and all key values are sent to the data export node server.

In one embodiment, the data entry node server includes:

The data receiving module is configured to receive the data stream sent by the client or the source station;

The data processing module is configured to fragment the received data stream according to a certain algorithm to obtain multiple data fragments, and encode each data fragment to obtain a key value that can represent the data fragment;

a data caching module configured to cache the data fragment;

The key value sending module is configured to send all key values to the data export node server.

The missing key value receiving module is configured to determine whether to receive the information indicating that the key value is missing returned by the data export node server;

The key value and the corresponding data fragment sending module is configured to, if the information indicating that the key value is missing is received from the data export node server, then the missing key value and the data corresponding to the missing key value The fragments are sent to the data egress node server.

The present invention also provides a data egress node server in a flow cache-based transparent transmission acceleration network, the data egress node server is configured to receive the key values sent by the above data ingress node server, and restore the corresponding key values according to these key values The data fragmentation; the multiple data fragments are spliced into complete data and sent to the source station or client.

In one embodiment, the data egress node server includes:

1502481CNCN

A data receiving module configured to receive the key value sent by the data entry node, and/or the missing key value and the data fragment corresponding to the missing key value;

The data distinguishing module is configured to distinguish whether the received key value is the missing key value and the data fragment corresponding to the missing key value; if the data distinguishing module judges that the received key value is only the key value, then send the key value to the data parsing module; if the data distinguishing module judges that what is received is the missing key value and the data fragment corresponding to the missing key value, then the missing key value The corresponding data fragmentation is sent to the data splicing module, and at the same time, the data fragmentation corresponding to the missing key value is cached to the data caching module, so that if the same data is transmitted next time, it is not necessary to be regenerated by the data entry node server. Send data, but get it directly from the local cache;

The data parsing and cache lookup module is configured to parse the key value and use the key value to find out from the data cache module whether there is a data fragment corresponding to the key value cached locally;

The data splicing module is configured to, if a cache of data fragments corresponding to the key value is found locally, then use the cached data fragments to concatenate complete data and send it to the terminal; if the data distinguishing module judges that the received If the missing key value and the data fragment corresponding to the missing key value are received, the data splicing module is further configured to use the data fragment corresponding to the missing key value to stitch complete data and send it to the terminal;

The missing key value sending module is configured to send information indicating that the key value is missing to the data entry node server if the data parsing and cache lookup module does not find the cache of the data fragment locally.

Description of drawings

The above summary of the invention and the following specific implementation methods of the present invention will be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are merely examples of the claimed invention. In the drawings, the same reference numerals represent the same or similar elements.

Fig. 1 shows the transparent transmission network framework of prior art;

Fig. 2 shows an overall schematic diagram according to an embodiment of the present invention;

Fig. 3 shows an overall flowchart according to an embodiment of the present invention;

Fig. 4 shows the processing flow of the data entry node server according to an embodiment of the present invention;

Fig. 5 shows the processing flow of the data egress node server according to an embodiment of the present invention;

FIG. 6 shows a block diagram of a data entry node server according to an embodiment of the present invention; and

Fig. 7 shows a block diagram of a data egress node server according to an embodiment of the present invention.

Detailed ways

The detailed features and advantages of the present invention are described in detail below in the specific embodiments, the content of which is sufficient to enable any person skilled in the art to understand the technical content of the present invention and implement it accordingly, and according to the specification, claims and drawings disclosed in this specification , those skilled in the art can easily understand the related objects and advantages of the present invention.

The invention provides a method for accelerating transparent transmission based on flow cache. Its basic idea is to achieve the effect of saving bandwidth by accelerating the processing of transmission services inside the network, and at the same time accelerate the transmission of customer data. When customer data passes through the application acceleration network, using the characteristics of the multi-level architecture of the application acceleration network, the data is encoded and transmitted on the first application acceleration node that the data passes through, and the original data is decoded and restored on the last application acceleration node. Affect the data that customers actually get. If the customer allows the last application acceleration node to be set up in the customer's network, the customer's egress bandwidth can be saved. If it is not set up on the customer's intranet, the effect of speeding up the data transmission speed can be achieved by reducing the amount of data transmitted by the intermediate nodes.

Fig. 2 shows an overall schematic diagram according to an embodiment of the present invention. As shown in Figure 2, except that the complete data is transmitted between the client and the edge node, and between the node closest to the source station and the server of the source station, the application acceleration network between the edge node and the node closest to the source station The transmitted data is the key data after data processing. In the present invention, the so-called key data refers to a representation value (ie, Key value) obtained through a certain algorithm that can represent the data. In one embodiment, key data may be encoded or compressed data.

The transparent acceleration network processes data in the following two ways:

1. The client uploads data to the edge node, and the edge transmits the data to the source station through the application acceleration network.

2. The source station sends the response data to the application acceleration node closest to the source, and the node returns the data to the client through the original route.

Therefore, for uploading data, the edge node corresponds to the data entry node server, and the node closest to the source station corresponds to the data exit node server. For downloading data, the edge node corresponds to the data export node server, and the node closest to the source station corresponds to the data export node server.

Fig. 3 shows an overall flow chart according to an embodiment of the present invention. The flowchart includes the following steps.

In step S301, the data entry node server fragments the data flow sent by the receiving client or the source station to obtain multiple data fragments.

Step S302, the data entry node server processes each data fragment to obtain a key value that can represent the data fragment. In one embodiment, the data entry node server encodes and compresses the data fragments according to a certain algorithm.

Step S303, the data entry node server sends all key values to the data exit node server.

Step S304, the data egress node server restores the corresponding data fragments according to the key values. In one embodiment, the data egress node server decodes the data fragments according to a certain algorithm.

In step S305, the data export node server splices the multiple data fragments into complete data and sends it to the source station or the client.

The step of the data egress node server splicing the plurality of data fragments into complete data and sending it to the terminal also includes the following several sub-steps.

The data egress node server judges whether there is a data fragment corresponding to the key value cached locally.

If the data egress node server determines that there is no data fragment corresponding to the key value in the local cache, it returns information indicating that the key value is missing to the data ingress node, and the data ingress node server receives the information indicating that the key is missing Value information to the data export node server to send the missing key value and the data fragmentation corresponding to the missing key value; the data export node server uses the data fragmentation corresponding to the missing key value to The spliced complete data is sent to the terminal, and the data fragment corresponding to the missing key value is cached at the same time.

If the data egress node server determines that there is a data fragment corresponding to the key value in the local cache, then the multiple data fragments are spliced into complete data and sent to the terminal.

Fig. 4 shows the processing flow of the data entry node server according to an embodiment of the present invention.

Step S401, the data entry node receives the data flow sent by the client or the source station.

Step S402, fragment the received data stream according to a certain algorithm to obtain several data fragments, and cache the data fragments. In one embodiment, the data segments are of variable length.

In step S403, each data fragment is processed to obtain a key value (Key value) that can represent the data fragment. The key value refers to the key data (Key value) obtained through a certain algorithm that can represent the data slice.

Step S404, sending all key values to the data egress node.

Step S405, judging whether the information indicating that the key value is missing is received from the data export node.

Step S406, if the information indicating that the key value is missing is received from the data export node, then the missing key value and the data fragment corresponding to the missing Key value are sent to the data export node. Specifically, if the data export node finds that the Key value does not exist locally, it means that the data corresponding to the Key value is not cached in the data export node, so it will send information indicating the missing Key value to the data entry node , the data entry node needs to send the data to the data exit node, and in order not to repeat the transmission of the data next time, the data entry node needs to send the Key value corresponding to the data to the data exit node, so that the next request for data can be directly from the data Obtained at the output node.

Step S407, if the information indicating the missing key value returned by the data export node is not received, the data transmission is ended.

Fig. 5 shows the processing flow of the data egress node server according to an embodiment of the present invention.

Step S501, the data egress node receives the key value sent by the data ingress node, or receives the combination of the missing key value and the data fragment corresponding to the missing key value.

Step S502, judging whether the received key value or the combination of the missing key value and the data fragment corresponding to the missing key value.

Step S503, if it is determined that it is only the key value, then analyze the key value and use the key value to find out whether the local cache of the data export node has a data fragment corresponding to the key value.

Step S504, if there is a cache of data fragments locally, splicing several data fragments into complete data and sending it to the terminal.

Step S505, if there is no cache of the data fragment locally, send information indicating that the key value is missing to the data entry node.

Step S506, if it is determined in step S502 that the received combination of the missing key value and the data fragment corresponding to the missing key value is used, the data fragment corresponding to the missing key value is used to splice the complete data to the terminal, and at the same time The data fragment corresponding to the missing key value is saved in the cache area, so that if the same data is transmitted next time, the original data does not need to be resent by the data entry node, but can be obtained directly from the local cache.

Fig. 6 shows a structure diagram of a data entry node server according to an embodiment of the present invention.

As shown in Figure 6, the data entry node server of the present invention includes a data receiving module 601, a data processing module 602, a data caching module 603, a key value sending module 604, a missing key value receiving module 605, and key values and corresponding data points Slice sending module 606.

The data receiving module 601 is configured to receive data sent by the client or the source station.

The data processing module 602 is configured to segment the received data stream according to a certain algorithm to obtain several data segments, and encode each data segment to obtain a key value that can represent the data segment.

Further, the data processing module 602 includes a data fragmentation module and a data encoding module. Wherein, the data fragmentation module is configured to fragment the received data stream according to a certain algorithm to obtain several data fragments. In one embodiment, the data segments are of variable length. The data encoding module is configured to process each data fragment to obtain a key value (Key value) that can represent the data fragment. The key value refers to the key data (Key value) obtained through a certain algorithm that can represent the data slice.

The data cache module 603 is configured to cache the data slices.

The key value sending module 604 is configured to send all key values to data egress nodes.

The missing key value receiving module 605 is configured to determine whether the information indicating that the key value is missing is received from the data export node.

The key value and the corresponding data fragment sending module 606 is configured to, if the information indicating that the key value is missing is received from the data export node, then the missing key value and the data corresponding to the missing Key value are divided into The slice is sent to the data egress node.

Fig. 7 shows a structure diagram of a data egress node server according to an embodiment of the present invention.

As shown in FIG. 7 , the data export node server of the present invention includes a data receiving module 701 , a data distinguishing module 702 , a data parsing module 703 , a data splicing module 704 , a missing key value sending module 705 , and a data caching module 706 .

The data receiving module 701 is configured to receive the key value sent by the data entry node, or the combination of the missing key value and the data fragment corresponding to the missing key value.

The data distinguishing module 702 is configured to distinguish whether the received key value is the combination of the missing key value and the data fragment corresponding to the missing key value. If the data distinguishing module 702 determines that what the data receiving module 701 receives is only the key value, it sends the key value to the data parsing module 703 . If the data distinguishing module 702 judges that what the data receiving module 701 receives is a combination of the missing key value and the data fragmentation corresponding to the missing key value, then the data fragmentation corresponding to the missing key value is sent to The data stitching module 704 . At the same time, the data fragment corresponding to the missing key value is also cached in the data cache module 706, so that if the same data is transmitted next time, it is not necessary to resend the original data by the data entry node, but directly obtain it from the local cache That's it.

The data parsing and cache lookup module 703 is configured to parse the key value and use the key value to find out from the data cache module 706 whether a data fragment corresponding to the key value is locally cached. In one embodiment, the data parsing and cache lookup module 703 is configured to obtain the original data fragment corresponding to the key value according to a certain algorithm.

The data splicing module 704 is configured to, if a cache of data fragments corresponding to the key value is found locally, use these cached data fragments to concatenate complete data and send it to the terminal. In addition, if the data distinguishing module 702 determines that what the data receiving module 701 receives is a combination of the missing key value and the data fragment corresponding to the missing key value, the data splicing module is also configured to use the missing The data fragments corresponding to the key value of the key are spliced and the complete data is sent to the terminal.

The missing key value sending module 705 is configured to, if there is no cache of the data fragment locally, send information indicating that the key value is missing to the data entry node.

The data caching module 706 is configured to cache data slices.

To sum up, the transparent transmission acceleration scheme based on stream cache of the present invention extracts the key value of the data through processing at the data access node, and restores the complete data according to the key value at the data exit node, so that the amount of data in the transmission process is reduced, thereby To achieve the effect of reducing data transmission time. The stream cache-based transparent transmission acceleration solution of the present invention solves the above-mentioned three drawbacks existing in the network data transparent transmission technology in the prior art.

Aiming at the above-mentioned first drawback, the solution according to the present invention is that when the client downloads the data for the first time, the data is cached on the edge node in units of blocks or fragments, and when the same data is downloaded for the second time, away from The node near the source only needs to pass the key value of the data block to the edge node, and the edge node finds the corresponding data block from the local cache, splicing it into complete data and returning it to the client.

For the second disadvantage above, since the cache is based on data blocks, for different URLs, only different data parts need to be transmitted, and the same data block can still only transmit key values, so the amount of transmitted data is also reduced , which improves the response speed.

For the above-mentioned third disadvantage, the solution is to cache the data block at the data entry node first, and transfer the key value to the data exit node. If the data exit node already has the data block, you can directly splice the data response. If the data If the exit node does not have the data block yet, it will feed back to the data entry node and request to transmit the data of the data block.

The terms and expressions used here are for description only, and the present invention should not be limited to these terms and expressions. The use of these terms and expressions does not mean to exclude any equivalent features shown and described (or parts thereof), and it should be recognized that various modifications may also be included within the scope of the claims. Other modifications, changes and substitutions are also possible. Accordingly, the claims should be read to cover all such equivalents.

Similarly, it should be pointed out that although the present invention has been described with reference to the current specific embodiments, those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the present invention, without departing from the present invention. Various equivalent changes or substitutions can also be made under the spirit of the present invention. Therefore, as long as the changes and modifications to the above embodiments are within the spirit of the present invention, they will all fall within the scope of the claims of the present application.

Claims (10)

1., based on a transparent transmission accelerated method for stream buffer memory, it is characterized in that, comprising:

Data entries node server carries out burst to the data flow receiving client or source station transmission, obtains multiple data fragmentation;

This Data entries node server processes this data fragmentation each, obtains the key value that can represent this data fragmentation;

All key values are sent to data outlet node server by this Data entries node server;

This data outlet node server is reduced into corresponding data fragmentation according to those key values;

The plurality of data fragmentation is spliced into complete data and sends to source station or client by this data outlet node server.

2. transparent transmission accelerated method as claimed in claim 1, it is characterized in that, the plurality of data fragmentation is spliced into complete data and sends to the step of terminal also to comprise by this data outlet node server:

This data outlet node server judges whether this locality is cached with the data fragmentation corresponding with this key value;

If this data outlet node server judges that this locality is not cached with the data fragmentation corresponding with this key value, then return the information representing this key value of disappearance to this Data entries node, described Data entries node server after the information receiving this expression delete critical value to described data outlet node server send this disappearance key value and to the data fragmentation corresponding to the key value of this disappearance; Described data outlet node server utilizes the data fragmentation corresponding to the key value of this disappearance to send to terminal to splice complete data, and the data fragmentation corresponding to key value of simultaneously this disappearance of buffer memory;

If this data outlet node server judges that local cache has the data fragmentation corresponding with this key value, then the plurality of data fragmentation is spliced into complete data and sends to terminal.

3. transparent transmission accelerated method as claimed in claim 2, is characterized in that:

This Data entries node server processes this data fragmentation each, obtains representing that the key value of this data fragmentation comprises the following steps:

This Data entries node server is encoded to this data fragmentation each, and this data fragmentation each is random length

Be reduced into the step of the data fragmentation of correspondence according to those key values at this data outlet node server before, further comprising the steps of:

Received by this data outlet node server judges is only this key value, or the data fragmentation corresponding to key value of the key value of this disappearance and this disappearance.

4., based on a transparent transmission accelerating network for stream buffer memory, it is characterized in that, comprising: described transparent transmission accelerating network comprises Data entries node server and data outlet node server, wherein,

This Data entries node server, the data flow be configured to receiving client or source station transmission carries out burst, obtains multiple data fragmentation; This data fragmentation each is processed, obtains the key value that can represent this data fragmentation; All key values are sent to data outlet node server;

This data outlet node server, is configured to be reduced into corresponding data fragmentation according to those key values; The plurality of data fragmentation is spliced into complete data and sends to source station or client.

5., as claimed in claim 4 based on the transparent transmission accelerating network of stream buffer memory, it is characterized in that, this Data entries node server comprises:

Data reception module, is configured to the data flow receiving client or source station transmission;

Data processing module, is configured to carry out burst to the data flow received according to certain algorithm, obtains multiple data fragmentation, and each data fragmentation is encoded to the key value that obtains representing this data fragmentation;

Data cache module, is configured to this data fragmentation of buffer memory;

Key value sending module, is configured to send all key values to this data outlet node server.

Delete critical value receiver module, is configured to judge whether to receive the information that expression that this data outlet node server returns lacks this key value;

Key value and corresponding data fragmentation sending module, be configured to, if receive the information that expression that this data outlet node server returns lacks this key value, then the data fragmentation corresponding to the key value of the key value of this disappearance and this disappearance is sent to this data outlet node server.

6., as claimed in claim 5 based on the transparent transmission accelerating network of stream buffer memory, it is characterized in that, this data outlet node server comprises:

Data reception module, is configured to receive this key value that this Data entries node sends, and/or the key value of this disappearance and the data fragmentation corresponding to the key value of this disappearance;

Data separation module, what be configured to that district office receives is this key value, or the data fragmentation corresponding to the key value of the key value of this disappearance and this disappearance; If what this data separation module judged that this receives is only this key value, then this key value is sent to data resolution module; If this data separation module judges that received is the key value of this disappearance and the data fragmentation corresponding to the key value of this disappearance, then the data fragmentation corresponding to the key value of this disappearance is sent to data concatenation module, simultaneously, by the data fragmentation buffer memory corresponding to the key value of this disappearance to data cache module, if so that transmission next time identical data, data can be resend by this Data entries node server again, but directly obtain from local cache;

Data Analysis and cache lookup module, be configured to resolve this key value and from this data cache module, search this locality by this key value whether be cached with the data fragmentation corresponding with this key value;

Data concatenation module, is configured to, if this locality finds the buffer memory of data fragmentation corresponding to this key value, then utilizes the data fragmentation of those buffer memorys to be spliced into complete data and sends to terminal; If this data separation module judges that received is the key value of this disappearance and the data fragmentation corresponding to the key value of this disappearance, then this data concatenation module is also configured to utilize the data fragmentation corresponding to the key value of this disappearance to splice complete data and sends to terminal;

Delete critical value sending module, is configured to, if this Data Analysis and cache lookup module do not find the buffer memory of this data fragmentation in this locality, then sends and represents that the information of this key value of disappearance is to this Data entries node server.

7. based on the Data entries node server in the transparent transmission accelerating network of stream buffer memory, it is characterized in that, the data flow that this Data entries node server is configured to receiving client or source station transmission carries out burst, obtains multiple data fragmentation; This data fragmentation each is processed, obtains the key value that can represent this data fragmentation; All key values are sent to data outlet node server.

8. Data entries node server as claimed in claim 7, it is characterized in that, this Data entries node server comprises:

Data reception module, is configured to the data flow receiving client or source station transmission;

Data processing module, is configured to carry out burst to the data flow received according to certain algorithm, obtains multiple data fragmentation, and each data fragmentation is encoded to the key value that obtains representing this data fragmentation;

Data cache module, is configured to this data fragmentation of buffer memory;

Key value sending module, is configured to send all key values to this data outlet node server.

Delete critical value receiver module, is configured to judge whether to receive the information that expression that this data outlet node server returns lacks this key value;

Key value and corresponding data fragmentation sending module, be configured to, if receive the information that expression that this data outlet node server returns lacks this key value, then the data fragmentation corresponding to the key value of the key value of this disappearance and this disappearance is sent to this data outlet node server.

9. one kind based on stream buffer memory transparent transmission accelerating network in data outlet node server, it is characterized in that, this data outlet node server is configured to the key value receiving Data entries node server as claimed in claim 8 transmission, and is reduced into corresponding data fragmentation according to those key values; The plurality of data fragmentation is spliced into complete data and sends to source station or client.

10. data outlet node server as claimed in claim 9, it is characterized in that, this data outlet node server comprises:

Data reception module, is configured to receive this key value that this Data entries node sends, and/or the key value of this disappearance and the data fragmentation corresponding to the key value of this disappearance;

Data separation module, what be configured to that district office receives is this key value, or the data fragmentation corresponding to the key value of the key value of this disappearance and this disappearance; If what this data separation module judged that this receives is only this key value, then this key value is sent to data resolution module; If this data separation module judges that received is the key value of this disappearance and the data fragmentation corresponding to the key value of this disappearance, then the data fragmentation corresponding to the key value of this disappearance is sent to data concatenation module, simultaneously, by the data fragmentation buffer memory corresponding to the key value of this disappearance to data cache module, if so that transmission next time identical data, data can be resend by this Data entries node server again, but directly obtain from local cache;

Data Analysis and cache lookup module, be configured to resolve this key value and from this data cache module, search this locality by this key value whether be cached with the data fragmentation corresponding with this key value;

Data concatenation module, is configured to, if this locality finds the buffer memory of data fragmentation corresponding to this key value, then utilizes the data fragmentation of those buffer memorys to be spliced into complete data and sends to terminal; If this data separation module judges that received is the key value of this disappearance and the data fragmentation corresponding to the key value of this disappearance, then this data concatenation module is also configured to utilize the data fragmentation corresponding to the key value of this disappearance to splice complete data and sends to terminal;

Delete critical value sending module, is configured to, if this Data Analysis and cache lookup module do not find the buffer memory of this data fragmentation in this locality, then sends and represents that the information of this key value of disappearance is to this Data entries node server.