mirror of https://github.com/go-redis/redis.git
149 lines
2.7 KiB
Go
149 lines
2.7 KiB
Go
package redis_test
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import (
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"fmt"
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"strconv"
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"github.com/vmihailenco/redis/v2"
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)
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func ExampleTCPClient() {
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client := redis.DialTCP(&redis.Options{
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Addr: "localhost:6379",
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Password: "", // no password set
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DB: 0, // use default DB
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})
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defer client.Close()
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ping := client.Ping()
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fmt.Println(ping.Err(), ping.Val())
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// Output: <nil> PONG
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}
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func ExampleUnixClient() {
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client := redis.DialUnix(&redis.Options{
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Addr: "/tmp/redis.sock",
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})
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defer client.Close()
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ping := client.Ping()
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fmt.Println(ping.Err(), ping.Val())
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// Output: <nil> PONG
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}
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func ExampleSetGet() {
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client := redis.DialTCP(&redis.Options{
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Addr: ":6379",
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})
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defer client.Close()
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set := client.Set("foo", "bar")
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fmt.Println(set.Err(), set.Val())
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get := client.Get("foo")
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fmt.Println(get.Err(), get.Val())
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// Output: <nil> OK
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// <nil> bar
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}
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func ExamplePipeline() {
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client := redis.DialTCP(&redis.Options{
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Addr: ":6379",
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})
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defer client.Close()
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var set *redis.StatusReq
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var get *redis.StringReq
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reqs, err := client.Pipelined(func(c *redis.Pipeline) {
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set = c.Set("key1", "hello1")
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get = c.Get("key2")
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})
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fmt.Println(err, reqs)
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fmt.Println(set)
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fmt.Println(get)
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// Output: (nil) [SET key1 hello1: OK GET key2: (nil)]
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// SET key1 hello1: OK
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// GET key2: (nil)
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}
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func incr(tx *redis.Multi) ([]redis.Req, error) {
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get := tx.Get("key")
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if err := get.Err(); err != nil && err != redis.Nil {
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return nil, err
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}
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val, _ := strconv.ParseInt(get.Val(), 10, 64)
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reqs, err := tx.Exec(func() {
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tx.Set("key", strconv.FormatInt(val+1, 10))
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})
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// Transaction failed. Repeat.
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if err == redis.Nil {
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return incr(tx)
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}
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return reqs, err
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}
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func ExampleTransaction() {
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client := redis.DialTCP(&redis.Options{
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Addr: ":6379",
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})
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defer client.Close()
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client.Del("key")
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tx := client.Multi()
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defer tx.Close()
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watch := tx.Watch("key")
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_ = watch.Err()
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reqs, err := incr(tx)
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fmt.Println(err, reqs)
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// Output: <nil> [SET key 1: OK]
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}
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func ExamplePubSub() {
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client := redis.DialTCP(&redis.Options{
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Addr: ":6379",
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})
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defer client.Close()
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pubsub := client.PubSub()
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defer pubsub.Close()
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err := pubsub.Subscribe("mychannel")
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_ = err
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msg, err := pubsub.Receive()
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fmt.Println(msg, err)
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pub := client.Publish("mychannel", "hello")
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_ = pub.Err()
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msg, err = pubsub.Receive()
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fmt.Println(msg, err)
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// Output: &{subscribe mychannel 1} <nil>
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// &{mychannel hello} <nil>
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}
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func Get(client *redis.Client, key string) *redis.StringReq {
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req := redis.NewStringReq("GET", key)
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client.Process(req)
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return req
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}
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func ExampleCustomCommand() {
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client := redis.DialTCP(&redis.Options{
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Addr: ":6379",
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})
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defer client.Close()
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get := Get(client, "key_does_not_exist")
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fmt.Println(get.Err(), get.Val())
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// Output: (nil)
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}
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