Init

example/hll/README.md

@@ -0,0 +1,10 @@
+# Redis HyperLogLog example
+
+To run this example:
+
+```shell
+go run .
+```
+
+See [Using HyperLogLog command with go-redis](https://redis.uptrace.dev/guide/go-redis-hll.html) for
+details.

example/hll/go.mod

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+module github.com/redis/go-redis/example/hll
+
+go 1.18
+
+replace github.com/redis/go-redis/v9 => ../..
+
+require github.com/redis/go-redis/v9 v9.5.3
+
+require (
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+)

example/hll/go.sum

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+github.com/bsm/ginkgo/v2 v2.12.0 h1:Ny8MWAHyOepLGlLKYmXG4IEkioBysk6GpaRTLC8zwWs=
+github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
+github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
+github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=

example/hll/main.go

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+package main
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/redis/go-redis/v9"
+)
+
+func main() {
+	ctx := context.Background()
+
+	rdb := redis.NewClient(&redis.Options{
+		Addr: ":6379",
+	})
+	_ = rdb.FlushDB(ctx).Err()
+
+	for i := 0; i < 10; i++ {
+		if err := rdb.PFAdd(ctx, "myset", fmt.Sprint(i)).Err(); err != nil {
+			panic(err)
+		}
+	}
+
+	card, err := rdb.PFCount(ctx, "myset").Result()
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Println("set cardinality", card)
+}