consistent

Consistent hashing module for Node.JS

installation

``
npm install consistent
`

usage

`js
var consistent = require('consistent');

var ring = consistent({
members: [
"member1",
"member2",
{
key: "member3",
weight: 1.5 // optional, default weight is 1
}
],
hash: 'md5' // can use 'md5' or 'murmurhash'
});

console.log(ring.get('some key'));
// outputs member1 or member2 or member3
`

api

$3

adds a new member

`js
ring.add('member4');
// or
ring.add({
key: "member4",
weight: 3
})
`

$3

removes a member

`js
ring.remove("member2")
`

$3

this preserves the hash slots of old member, if you want to recalculate hashes for the new member, just remove the old one and add the new one.

`js
ring.replace('member1', 'member5');
`

$3

`js
ring.get('some key');
ring.getCached('some key'); //use lru cache
`

$3

`js
ring.exists('member1') // returns true if a member has been added with name member1
`

$3

`js
ring.length; // returns number of members within the ring
``

author

Ekin Koc

license

MIT