RedigoCluster is wrapper for the awesome Redigo redis client for the Go language.
It was created for use in the Revel web framework, but should be re-useable in any place.
- implements the redis cluster spec as of December 2013
- automatically refreshing the node map
- works with a single redis node too, so your development environemnt does not have to be complex
- test more failure scenarios in general
- add actual tests
- provide a status api
Place the following in your configuration file:
redis1.host="1.2.3.4"
redis1.port="6379"
redis2.host="1.2.3.5"
redis2.port="6379"
Then make an addition to your app's init.go.
import "github.com/cowboyrushforth/rediscluster"
func init() {
revel.OnAppStart(func() {
seed_a_host := revel.Config.StringDefault("redis1.host", "127.0.0.1")
seed_a_port := revel.Config.StringDefault("redis1.port", "6379")
seed_b_host := revel.Config.StringDefault("redis2.host", "")
seed_b_port := revel.Config.StringDefault("redis2.port", "")
seed_c_host := revel.Config.StringDefault("redis3.host", "")
seed_c_port := revel.Config.StringDefault("redis3.port", "")
seed_redii := make([]map[string]string, 3)
if len(seed_a_host) > 0 && len(seed_a_port) > 0 {
seed_redii = append(seed_redii, map[string]string{seed_a_host: seed_a_port})
}
if len(seed_b_host) > 0 && len(seed_b_port) > 0 {
seed_redii = append(seed_redii, map[string]string{seed_b_host: seed_b_port})
}
if len(seed_c_host) > 0 && len(seed_c_port) > 0 {
seed_redii = append(seed_redii, map[string]string{seed_c_host: seed_c_port})
}
rediscluster.Instance = rediscluster.NewRedisCluster(seed_redii, true)
})
}Now you have available in your other files in revel a handle to the redis cluster.
You can access it as so, say you have a file app/models/person.go
package models
import "github.com/garyburd/redigo/redis"
import "github.com/cowboyrushforth/redigocluster/rediscluster"
type Person struct {
Name string
}
type (self *Person) IncrementLoginCount() (int64, error) {
// rediscluster.Do has the same signature as redis.Do
return redis.Int64(rediscluster.Do("INCR", "person:"+self.Name+":login_count"))
}if you then ran something like
person := Person{Name: 'John Doe'}
num_logins, err := person.IncrementLoginCount()More documentation for this specific example you may want to check out here at redigo's docs here