CN111107172A

CN111107172A - Automatic switching method for terminal access entrance

Info

Publication number: CN111107172A
Application number: CN201811263470.1A
Authority: CN
Inventors: 金雅鑫
Original assignee: Wuxi Yazuo Online Technology Co ltd
Current assignee: Wuxi Yazuo Online Technology Co ltd
Priority date: 2018-10-28
Filing date: 2018-10-28
Publication date: 2020-05-05

Abstract

The invention uses the mechanism that the terminal automatically detects and optimally accesses the access point and actively switches the access point when the fault occurs, and provides a method for automatically switching the access entrance of the terminal, which comprises the following steps: the method comprises the steps of accessing a remote access point, associating a domain name, serving an HttpDens, and detecting a URI; the method comprises the following steps: s1: the HTTP client side firstly checks whether the analysis cache already exists, and if so, directly sends out access according to a cache result; s2: recording the total request times and response abnormity of each domain name or the times of abnormity thrown by the socket, and taking the failure proportion as the basis for switching; s3: health examination; s4: updating the analysis result through a health check mechanism; s5: a locking mechanism; the invention has the beneficial effects that: the reliability of the link is improved, the failure time is shortened, and the perception of the user to the public network failure is greatly reduced.

Description

Automatic switching method for terminal access entrance

Technical Field

The invention relates to the field of internet terminal connection, in particular to an automatic switching method for a terminal access entrance.

Background

With the popularization of big data and public clouds, various industries tend to upload data generated by production and operation to the cloud in real time by using networked terminals, and due to the requirement of high real-time performance of a production and operation system, the reliability of a link between the terminal and the cloud becomes very important. In the conventional B2C architecture, the terminal usually accesses the cloud end through a single domain name or IP address, and when the cloud end or the public network fails, the problem can be solved only by switching domain name resolution, or the user manually modifies the access point address, or the terminal relies on dynamic CDN services.

However, in view of the current situation in china, domain name switching is usually very slow to take effect, and the method for modifying the range point is poor in implementability. The dynamic CDN service can provide an available access point for the user nearby, but still cannot ascertain the actual situation of the user side, and is also affected by the characteristics of weak DNS security and easy hijacking, and thus fails.

The Chinese invention patent is disclosed, the publication number is: CN1328681C, patent name: an entrance server and an information supply method for supplying music content, application date: 20020704 which discloses that a portal server connects a plurality of content providing servers via a communication network and may also connect client terminals via a communication network. Each of the plurality of content providing servers has music content. The portal server is accessed by the client terminal, and the portal server transmits a catalog of music content supplied by the content supply server to the client terminal in response to a request from the client terminal. In the client terminal, the user can select a desired music content based on the directory transmitted by the portal server, and selection information specifying the selected music content can be transmitted from the client terminal to the communication network. Then, in response to the selection information, the selected music content is supplied from the content providing server having the selected music content.

Disclosure of Invention

The invention uses the mechanism that the terminal automatically detects and optimally accesses the access point and actively switches the access point when the fault occurs, and provides a method for automatically switching the access entrance of the terminal, which comprises the following steps: the method comprises the steps of accessing a remote access point, associating a domain name, serving an HttpDens, and detecting a URI;

the method comprises the following steps:

s1: the HTTP client side firstly checks whether the analysis cache already exists, and if so, directly sends out access according to a cache result; if no cache record exists, using HTTPDNS to resolve the domain name, and sending a request through a resolution result IP;

s2: recording the total request times and response abnormity of each domain name or the times of abnormity thrown by the socket, and taking the failure proportion as the basis for switching;

s3: the health check exists in a background task mode, domain names needing to be checked are sequentially taken out from the health check task queue, all access point IPs are analyzed in an HTTPDNS mode, and health check is carried out on all the IPs. After checking, selecting the IP with the normal return and the shortest response time to be put into an analysis cache;

s4: the expiration time of the IP is recorded in the analysis cache, when the IP is taken out from the analysis cache, whether the IP is expired or not is checked, if the IP is expired, the domain name is added into the health check cache, and the analysis result is updated through a health check mechanism;

s5: a locking mechanism: when the request is intercepted and no record exists in the cache, locking other subsequent requests with the same domain name, and waiting for the completion of the resolution; when a domain name has been added to the resolution task queue, the same task is prevented from being repeatedly added.

Preferably, the ratio of failures referred to in S2 is used as a basis for switching, and in order to prevent frequent switching due to accidental abnormality, the current time minute is counted in an array cycle count manner, and then the current time minute is added to the corresponding element in the array.

Preferably, the locking mechanism described in S5 is a request lock and a resolve task lock, respectively.

The invention has the beneficial effects that: the reliability of the link is improved, the failure time is shortened, and the perception of the user to the public network failure is greatly reduced.

Drawings

FIG. 1 is a schematic illustration of a main process of the present method;

FIG. 2 is a schematic view of the failure rate checking process of the present method;

FIG. 3 is a schematic view of the health examination process of the present method.

Detailed Description

The present invention will now be described in detail with reference to the drawings, which are given by way of illustration and explanation only and should not be construed to limit the scope of the present invention in any way.

A method for automatically switching terminal access entries is provided: the method comprises the steps of accessing a remote access point, associating a domain name, serving an HttpDens, and detecting a URI;

the method comprises the following steps:

In this embodiment, it is preferable that the ratio of failures in S2 is used as a basis for switching, and in order to prevent frequent switching due to accidental abnormality, an array cycle count mode is adopted, and the current time and minute is added to the corresponding element in the array after being complemented.

Preferably, in this embodiment, the locking mechanism described in S5 is a request lock and a resolution task lock, respectively.

It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A terminal access entrance automatic switching method comprises a remote access point, an associated domain name, an http dns service and a URI for detection;

the method is characterized by comprising the following steps:

2. The method according to claim 1, wherein the ratio of failures involved in S2 is used as a basis for switching, and in order to prevent frequent switching due to sporadic anomalies, an array cycle count is used to add the current time and minute to corresponding elements in the array after being complemented.

3. The method according to claim 2, wherein the locking mechanism in S5 is request lock and resolve task lock, respectively.