redis

Cache Adapter implementation for Redis

A CacheAdapter implementation that allows to connect and use a Redis instance.

Beware that at the moment it has the github.com/gomodule/redigo dependency

Usage

Please refer to the following example for the correct usage:

package main

import (
	"log"
	"time"

	"github.com/gomodule/redigo/redis"
	cacheadapters "github.com/tryvium-travels/golang-cache-adapters"
	rediscacheadapters "github.com/tryvium-travels/golang-cache-adapters/redis"
)

func main() {
	redisURI := "rediss://my-redis-instance-uri:port"

	myRedisPool := &redis.Pool{
		Dial: func() (redis.Conn, error) {
			// obtain a redis connection, there
			// are plenty of ways to do that.
			return redis.DialURL(redisURI)
		},
	}

	exampleTTL := time.Hour

	adapter, err := rediscacheadapters.New(myRedisPool, exampleTTL)
	if err != nil {
		// remember to check for errors
		log.Fatalf("Adapter initialization error: %s", err)
	}

	type exampleStruct struct {
		Value string
	}

	exampleKey := "a:redis:key"

	var exampleValue exampleStruct
	err = adapter.Get(exampleKey, &exampleValue)
	if err != nil {
		// remember to check for errors
		log.Fatalf("adapter.Get error: %s", err)
	}

	exampleKey = "another:redis:key"

	// nil TTL represents the default value put in the New function
	err = adapter.Set(exampleKey, exampleValue, nil)
	if err != nil {
		// remember to check for errors
		log.Fatalf("adapter.Get error: %s", err)
	}
}