node-redis-multi
v0.1.2
Published
A Node.js library to augment node_redis interface with an enhanced version of MULTI command
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node-redis-multi
A Node.js library to augment node_redis with an enhanced version of MULTI command.
Installation
npm install node-redis-multi --save
Usage
node-redis-multi
replaces methods that are related to MULTI
.
The callback of .exec()
will get invoked with two arguments as the original version but second argument is a Response
object.
// module deps
var
redis = require('redis');
require('../lib/multi')(redis);
var
client = redis.createClient(),
multi = client.multi();
multi
.set('path:to:key', 1)
.get('path:to:key')
.exec(function (error, response) {
console.log(response.get('path:to:key')); // 1
console.log(response.at(0)); // OK
console.log(response.at(1)); // 1
});
Response
Response object lets you query replies from .exec()
using two different methods: Response#get(<key>)
and Response#at(<index>)
.
Response#get(<key>)
lets you retrieve a reply by key:
multi
.set('path:to:key', 'value')
.get('path:to:key')
.exec(function (error, response) {
var
reply = response.get('path:to:key');
console.log(reply); // value
});
Response#get(<key>)
is applicable only if the issued command has
- arity > 0;
readonly
flag;- position of first key === 1;
- position of last key === 1.
See Redis COMMAND for further information.
Response#at(<index>)
lets you retrieve a reply by its index:
multi
.set('path:to:key', 'value')
.get('path:to:key')
.exec(function (error, response) {
var
reply = response.at(1);
console.log(reply); // value
});