access_ngx_check

openresty Access control policy. It includes counter、leaky bucket algorithm and token bucket algorithm .

Introduce

In order to keep the service running normally, we use lua scripts to control user requests in a hierarchical way,
For example:

to Counter: If the number of requests in 10s reaches 1000, 20% of random requests will be rejected,
If the number of requests in 10s reaches 2000, 40% of random requests will be rejected.

And so on.
You can customize any of the above parameters.

Precondition

Make sure you have openresty installed and we will replace nginx

Usage

nginx.conf

...

location / {
        default_type application/json;
        lua_code_cache on;
       
        # Counter
        rewrite_by_lua_file /usr/local/openresty/nginx/conf/lua/Counter.lua;
        
        # leaky bucket
        # rewrite_by_lua_file /usr/local/openresty/nginx/conf/lua/LeakyBucket.lua;
        
        # token bucket
        # rewrite_by_lua_file /usr/local/openresty/nginx/conf/lua/tokenBucket.lua;
        
        proxy_pass http://xxxx;
    }
...