Added simple golang example with redigo lib for work with Redis

examples/golang/cource/06g_databases/go.mod

@@ -4,6 +4,7 @@ go 1.23.2
 
 require (
 	github.com/georgysavva/scany v1.2.2
+	github.com/gomodule/redigo v1.9.2
 	github.com/jackc/pgx/v4 v4.18.3
 	go.mongodb.org/mongo-driver v1.17.1
 )

examples/golang/cource/06g_databases/go.sum

@@ -18,6 +18,8 @@ github.com/gofrs/uuid v3.2.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRx
 github.com/gofrs/uuid v4.0.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/golang/snappy v0.0.4 h1:yAGX7huGHXlcLOEtBnF4w7FQwA26wojNCwOYAEhLjQM=
 github.com/golang/snappy v0.0.4/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/gomodule/redigo v1.9.2 h1:HrutZBLhSIU8abiSfW8pj8mPhOyMYjZT/wcA4/L9L9s=
+github.com/gomodule/redigo v1.9.2/go.mod h1:KsU3hiK/Ay8U42qpaJk+kuNa3C+spxapWpM+ywhcgtw=
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
 github.com/jackc/chunkreader v1.0.0 h1:4s39bBR8ByfqH+DKm8rQA3E1LHZWB9XWcrz8fqaZbe0=
 github.com/jackc/chunkreader v1.0.0/go.mod h1:RT6O25fNZIuasFJRyZ4R/Y2BbhasbmZXF9QQ7T3kePo=

examples/golang/cource/06g_databases/redis.cmd

@@ -0,0 +1,7 @@
+KEYS "*"
+GET some
+SET some 42
+INCR some
+DEL some
+EXPIRE 10
+LRANGE list 0 3

examples/golang/cource/06g_databases/redis.go

@@ -0,0 +1,83 @@
+package main
+
+import (
+	"fmt"
+//	"time"
+	"github.com/gomodule/redigo/redis"
+)
+
+func RedisSimple() {
+	conn, err := redis.Dial("tcp", "localhost:6379")
+	if err != nil {
+		panic(err)
+	}
+	defer conn.Close()
+
+	_, err = conn.Do("SET", "somekey1", 42)
+	if err != nil {
+		fmt.Println(err)
+	}
+	get, _ := redis.Int(conn.Do("GET", "somekey1"))
+	fmt.Printf("Somekey1: %d\n", get)
+	incr, _ := redis.Int(conn.Do("INCR", "somekey1"))
+	fmt.Printf("Somekey1: %d\n", incr)
+//	conn.Do("EXPIRE", "somekey1", 3)
+//	time.Sleep(4 * time.Second)
+//	get2, _ := conn.Do("GET", "somekey1")
+//	fmt.Printf("Somekey1: %d\n", get2)
+}
+
+func RedisScan() {
+	conn, err := redis.Dial("tcp", "localhost:6379")
+	if err != nil {
+		panic(err)
+	}
+	defer func() {
+		if err = conn.Close(); err != nil {
+			panic(err)
+		}
+	}()
+
+	iter := 0
+	var keys []string
+	for {
+		if array, err := redis.Values(conn.Do("SCAN", iter)); err != nil {
+			panic(err)
+		} else {
+			iter, _ = redis.Int(array[0], nil)
+			keys, _ = redis.Strings(array[1], nil)
+		}
+		fmt.Println(keys)
+
+		if iter == 0 {
+			break
+		}
+	}
+}
+
+func RedisListType() {
+	conn, err := redis.Dial("tcp", "localhost:6379")
+	if err != nil {
+		panic(err)
+	}
+	defer func() {
+		if err = conn.Close(); err != nil {
+			panic(err)
+		}
+	}()
+
+	conn.Do("RPUSH", "somelist", "one")
+	conn.Do("RPUSH", "somelist", "two")
+	conn.Do("RPUSH", "somelist", "three")
+
+	vars, _ := redis.Values(conn.Do("LRANGE", "somelist", 0, 4))
+	fmt.Println(redis.String(vars[0], nil))
+	fmt.Println(redis.String(vars[1], nil))
+	fmt.Println(redis.String(vars[2], nil))
+}
+
+func main() {
+	RedisSimple()
+	RedisListType()
+	RedisScan()
+}