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This article mainly introduces the relevant knowledge of "methods of nginx current limit and configuration management". The editor shows you the operation process through actual cases, the operation method is simple, fast and practical. I hope this article "methods of nginx current limit and configuration management" can help you solve the problem.

Nginx current limit http {limit_conn_zone $binary_remote_addr zone=addr:10m; / / $binary_remote_addr means to restrict / / zone=addr:10m to generate a memory area with a size of 10m and the name addr. Server {location / download/ {limit_conn addr 1; # limit concurrency limit_rate 50k; # limit bandwidth}}

Limit the number of concurrent connections

$binary_remote_addr: indicates that the limit is made through the identity of remote_addr. The purpose of "binary_" is to abbreviate the memory usage and to limit the ip address of the same client.

Zone=addr:10m: generates a 10m memory area named addr, which is used to store access frequency information

Http status code

400-499 is used to indicate the client's error.

500-599 is used to support server errors.

Limit the access frequency of the same client

Rate=1r/s: indicates the access frequency of clients with the same identity. Here, the limit is once per second, that is, only one request per second can be processed. For example, 30r/m can limit access every 2 seconds, that is, only one request is processed every 2 seconds.

Burst

Burst=5:burst burst, this configuration means to set a buffer with a size of 5.

When there are a large number of requests (outbreaks), requests that exceed the access frequency limit can be placed in this buffer to wait, but there are only 5 locations in this waiting area, and requests exceeding 503 will directly report an error of 503 and then return.

Nodelay

If set, the ability to process (burst + rate) requests will be provided instantly, and will be returned directly when the request exceeds (burst + rate). There will never be a situation in which the request needs to wait. (the unit of rate here is: Ripple s.)

If not set, all requests will be queued in turn.

Limit_rate limits bandwidth

Nginx configuration management automatic indexing

Expire cache configuration

Location expression type

~ means to perform a regular match that is case sensitive

~ * means to perform a regular match, which is case-insensitive

^ ~ indicates a normal character match. Prefix matching is preferred. If the match succeeds, no other location is matched.

= exact matching of ordinary characters. That is, a perfect match.

@ "@" defines a named location that is used when directed internally, such as error_page, try_files

/: universal match. If there is no other match, any request will match to

Location expression priority

Location = > location full path > location ^ ~ path > location ~, ~ * regular order > location partial start path (prefix matching) > /

Log polling

For security, the log directory does not need to give you nginx user access, set # chmod-R 700 / usr/local/nginx/logs

Prohibit unnecessary directory logs

Restrictions on site directories and files

Chinese garbled code

Set up charset utf-8

This is the end of the introduction of "methods of nginx current restriction and configuration management". Thank you for your reading. If you want to know more about the industry, you can follow the industry information channel. The editor will update different knowledge points for you every day.

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