Questions about limit_req_zone, what's the difference between rate= and burst=

Server NGINX
1

Hi All,

According to NGINX wiki,

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

server {
    location /search/ {
        limit_req   zone=one  burst=5;
    }

means allows a user no more than 1 request per second on average, with
bursts of no more than 5 requests.

But what’s the difference between rate= and burst=?
For example,

limit_req_zone $binary_remote_addr zone=one:10m rate=1r/s;
limit_req zone=one burst=5;

limit_req_zone $binary_remote_addr zone=one:10m rate=5r/s;
limit_req zone=one burst=1;

What’s the difference between above code? From my understanding, for
both settings, users can establish no more than 6 requests at the same
time.

2

On Thu, Jul 19, 2012 at 03:34:09PM +0800, fhal wrote:

limit_req zone=one burst=1;

What’s the difference between above code? From my understanding, for both
settings, users can establish no more than 6 requests at the same time.

http://nginx.org/en/docs/http/ngx_http_limit_req_module.html

3

Hello All:

We have an issue where I need to increase the proxy_read_timeout to a
large value. Currently its 300s. What is the the maximum supported
value ?

I am running nginx 1.0.5, could I be able to manually compile a larger
value in ?

snippit of conf
listen 10.222.3.88:80;
server_name localhost;
client_max_body_size 2500m;
proxy_read_timeout 300;
proxy_connect_timeout 75;
keepalive_timeout 75;

Regards
Duane

4

Hello!

On Thu, Jul 19, 2012 at 10:22:22PM -0400, Duane M. wrote:

We have an issue where I need to increase the proxy_read_timeout to a
large value. Currently its 300s. What is the the maximum supported
value ?

Supported values are up to 24 days.

Maxim D.