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http {
    ...
    limit_req_zone $binary_remote_addr zone=one:10m rate=1r/s;

    server {
        ...
    }
}

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location / {
    limit_req zone=one burst=5;
    ...
}

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$ nginx -s reload    # ÖØмÓÔØÉèÖÃ

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http {
    ...
    limit_req_zone $binary_remote_addr zone=one:10m rate=1r/s;
    
    server {
        ...
    }
}

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location / {
    limit_req zone=one burst=5;
    ...
}

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$ nginx -s reload    # ÖØмÓÔØÉèÖÃ

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http {
    ...
    lua_shared_dict limit_req_store 10m;
    
    server {
        ...
        
        location / {
            access_by_lua_block {
                local limit_req = require "resty.limit.req"
                local lim, err = limit_req.new("limit_req_store", 1, 1)
                if not lim then
                    ngx.log(ngx.ERR, "failed to instantiate a resty.limit.req object: ", err)
                    return ngx.exit(500)
                end
                local key = ngx.var.binary_remote_addr
                local delay, err = lim:incoming(key, true)
                if not delay then
                    if err == "rejected" then
                        return ngx.exit(503)
                    end
                    ngx.log(ngx.ERR, "failed to limit req: ", err)
                    return ngx.exit(500)
                end
                if delay >= 0.001 then
                    ngx.sleep(delay)
                end
            }
            ...
        }
    }
}

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