About

This module for test the ngx_consistent_hash api, which is based on ngx_consistent_hash module.

Configuration

conhash_test

• syntax: conhash_test
• default: -
• context: location

Turns on this module.

conhash_test_zone

• syntax: conhash_test_zone keys_zone=name:size [vnodecnt=count]
• default: -
• context: main

Sets the share memory name、share memory size and vnode count of the consistent hash.

If you explicitly specifly the vnodecnt, it cannot be more than 10000. By default, vnodecnt is set to 100.

NOTE: If you want to use the ngx_consistent_hash module must be defined in a similar directive.

Sample Config

worker_processes  4;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;
    
    conhash_test_zone keys_zone=conhash:5m;

    server {
        listen       80;
        server_name  localhost;

        location /conhash {
            conhash_test;
        }
    }
}

Testing

add:       curl -s "http://127.0.0.1/conhash?cmd=1&value=nodeA"
del:       curl -s "http://127.0.0.1/conhash?cmd=2&value=nodeA"
search:    curl -s "http://127.0.0.1/conhash?cmd=3&value=agile6v"
traverse:  curl -s "http://127.0.0.1/conhash?cmd=4"
clear:     curl -s "http://127.0.0.1/conhash?cmd=5"

### add node A
$ curl -s "http://127.0.0.1/conhash?cmd=1&value=A"
Add node successfully!

### add node B
$ curl -s "http://127.0.0.1/conhash?cmd=1&value=B"
Add node successfully!

### traverse vnode
$ curl -s "http://127.0.0.1/conhash?cmd=4" -o vnode.txt
$ cat vnode.txt

### search node
$ curl -s "http://127.0.0.1/conhash?cmd=3&value=agile6v"
agile6v(317471105) is in the node B(B-0599, 321124292)

### del node B
$ curl -s "http://127.0.0.1/conhash?cmd=2&value=B"
Delete node successfully!

### search node
$ curl -s "http://127.0.0.1/conhash?cmd=3&value=agile6v"
agile6v(317471105) is in the node A(A-0442, 322085099)

### add node B
$ curl -s "http://127.0.0.1/conhash?cmd=1&value=B"
Add node successfully!

### search node
$ curl -s "http://127.0.0.1/conhash?cmd=3&value=agile6v"
agile6v(317471105) is in the node B(B-0599, 321124292)

### clear all nodes
$ curl -s "http://127.0.0.1/conhash?cmd=5"

See also

• ngx_consistent_hash