redis-notifier
v1.0.0
Published
Redis Keyspace Event Notifier
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Redis KeySpace Event Notifier
Subscribe To Redis Keyspaced Events (v2.8.x) Using Redis' Newly Released Keyspaced Events Feature You can now subscribe to events that the server emits Depending on the subscription mode you subscribe with when starting the Redis Server.
--notify-keyspace-events <options>
- K Keyspace events, published with keyspace@ prefix.
- E Keyevent events, published with keyevent@ prefix.
- g Generic commands (non-type specific) like DEL, EXPIRE, RENAME, ...
- $ String commands
- l List commands
- s Set commands
- h Hash commands
- z Sorted set commands
- x Expired events (events generated every time a key expires)
- e Evicted events (events generated when a key is evicted for maxmemory)
- A Alias for g$lshzxe, so that the "AKE" string means all the events.
Getting Started
Using NPM + Package.json, simply just run npm install
If you are using node_redis
pre v0.11.0
checkout the tag v0.1.2
Usage / Configuration
Start Redis Server : redis-server CONF --notify-keyspace-events KExe
var redis = require('redis');
var RedisNotifier = require('redis-notifier');
var eventNotifier = new RedisNotifier(redis, {
redis : { host : '127.0.0.1', port : 6379 },
expired : true,
evicted : true,
logLevel : 'DEBUG' //Defaults To INFO
});
//Listen for event emission
eventNotifier.on('message', function(pattern, channelPattern, emittedKey) {
var channel = this.parseMessageChannel(channelPattern);
switch(channel.key) {
case 'expired':
this._handleExpired(emittedKey);
break;
case "evicted":
this._handleEvicted(emittedKey);
break;
default:
logger.debug("Unrecognized Channel Type:" + channel.type);
}
});
Contributing
In lieu of a formal style-guide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code using grunt.
Release History
- 0.2.0 updated node_redis connection args, added deinit method
- 0.1.2 updated logger interface
- 0.1.1 changed expire attribute to expired
- 0.1.0 Initial release
License
Licensed under the Apache 2.0 license.
Author
Chris Miller