All-in-one tool to optimize performance and monitor errors & logs
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- Documentation
- Reference
- Examples
- RealWorld example app
- Redis 3 commands except QUIT, MONITOR, and SYNC.
- Automatic connection pooling with circuit breaker support.
- Pub/Sub.
- Transactions.
- Pipeline and TxPipeline.
- Scripting.
- Timeouts.
- Redis Sentinel.
- Redis Cluster.
- Cluster of Redis Servers without using cluster mode and Redis Sentinel.
- Ring.
- Instrumentation.
go-redis supports 2 last Go versions and requires a Go version with modules support. So make sure to initialize a Go module:
go mod init github.com/my/repo
And then install go-redis/v8 (note v8 in the import; omitting it is a popular mistake):
go get github.com/go-redis/redis/v8
import ( "context" "github.com/go-redis/redis/v8" ) var ctx = context.Background() func ExampleClient() { rdb := redis.NewClient(&redis.Options{ Addr: "localhost:6379", Password: "", // no password set DB: 0, // use default DB }) err := rdb.Set(ctx, "key", "value", 0).Err() if err != nil { panic(err) } val, err := rdb.Get(ctx, "key").Result() if err != nil { panic(err) } fmt.Println("key", val) val2, err := rdb.Get(ctx, "key2").Result() if err == redis.Nil { fmt.Println("key2 does not exist") } else if err != nil { panic(err) } else { fmt.Println("key2", val2) } // Output: key value // key2 does not exist }
Some corner cases:
// SET key value EX 10 NX set, err := rdb.SetNX(ctx, "key", "value", 10*time.Second).Result() // SET key value keepttl NX set, err := rdb.SetNX(ctx, "key", "value", redis.KeepTTL).Result() // SORT list LIMIT 0 2 ASC vals, err := rdb.Sort(ctx, "list", &redis.Sort{Offset: 0, Count: 2, Order: "ASC"}).Result() // ZRANGEBYSCORE zset -inf +inf WITHSCORES LIMIT 0 2 vals, err := rdb.ZRangeByScoreWithScores(ctx, "zset", &redis.ZRangeBy{ Min: "-inf", Max: "+inf", Offset: 0, Count: 2, }).Result() // ZINTERSTORE out 2 zset1 zset2 WEIGHTS 2 3 AGGREGATE SUM vals, err := rdb.ZInterStore(ctx, "out", &redis.ZStore{ Keys: []string{"zset1", "zset2"}, Weights: []int64{2, 3} }).Result() // EVAL "return {KEYS[1],ARGV[1]}" 1 "key" "hello" vals, err := rdb.Eval(ctx, "return {KEYS[1],ARGV[1]}", []string{"key"}, "hello").Result() // custom command res, err := rdb.Do(ctx, "set", "key", "value").Result()
go-redis will start a redis-server and run the test cases.
The paths of redis-server bin file and redis config file are definded in main_test.go:
var (
redisServerBin, _ = filepath.Abs(filepath.Join("testdata", "redis", "src", "redis-server"))
redisServerConf, _ = filepath.Abs(filepath.Join("testdata", "redis", "redis.conf"))
)
For local testing, you can change the variables to refer to your local files, or create a soft link
to the corresponding folder for redis-server and copy the config file to testdata/redis/:
ln -s /usr/bin/redis-server ./go-redis/testdata/redis/src
cp ./go-redis/testdata/redis.conf ./go-redis/testdata/redis/
Lastly, run:
go test