Method and apparatus for dynamically updating DNS cache by Nginx (Engine X)-RTMP (Real Time Messaging Protocol)

Abstract

The invention provides a method and an apparatus for dynamically updating a DNS cache by an Nginx (Engine X)-RTMP (Real Time Messaging Protocol). The method comprises the following steps: S1, after the DNS cache set in advance is labeled into an on state, obtaining a current timestamp as well as an absolute timestamp that is set in advance and is recorded when the DNS cache is updated at a previous time; S2, obtaining a time interval between the current timestamp and the absolute timestamp, and comparing the time interval with an overtime interval set in advance; and S3, if the time interval is greater than the overtime interval, according to a URL that is recorded in advance and is corresponding to a backend service, updating the DNS cache and storing the current timestamp as the absolute timestamp. The method and the apparatus provided by the invention determine whether to perform DNS update by adding the DNS cache in the Gginx-RTMP and judging whether the timestamp is expired; a response can be made relatively fast for a condition in which an IP is scheduled and is changed by the backend service, and the IP of the backend service is switched timely and automatically.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a method and a device for dynamically updating DNS cache by Nginx-RTMP. Background technique [0002] With the development of network communication technology and the improvement of broadband network speed, network live broadcast technology is also developing continuously, and has received more and more attention. In the prior art, the Nginx-RTMP platform is usually used to build a live broadcast environment. [0003] Nginx (engine x) is a high-performance HTTP and reverse proxy server, as well as an IMAP / POP3 / SMTP server; Nginx as a load balancing server: Nginx can directly support Rails and PHP programs to serve externally, and can also support Serve as an HTTP proxy server. [0004] RTMP is an acronym for Real Time Messaging Protocol. The protocol is based on TCP and is a protocol family, including RTMP basic protocol and various variants such as RTMPT / RTMPS / RTMPE. RTMP ...

AI Technical Summary

Problems solved by technology

[0006] Therefore, the existing technology has at least the following technical defects: the backend server IP needs to be manually reloaded to obtain the configuration file; and if the backend server updates the IP corresponding to the domain name, and if the CDN result is not updated in time, it will cause traffic If the switching is not timely, the live broadcast service may be unavailable in severe cases

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