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zeekay
6994cf05aa
We do not use Redis. The client was a go-redis fork and still said so
everywhere: `package redis`, `redis.NewClient`, `redis://`, `extra/redisotel`.
Consumers wrote `redis.Client` against a Valkey-backed store called KV.
package redis -> package kv (93 decls)
redis.X -> kv.X (2,794 call sites)
"redis: …" errors -> "kv: …" (206)
extra/redis{otel,cmd,prometheus,census} -> extra/kv{otel,cmd,prometheus,census}
redis:// , rediss:// -> kv:// , kvs:// (ParseURL)
Redis*/*Redis* idents -> KV*/*KV*
REDIS_VERSION, REDIS_ENDPOINTS_CONFIG_PATH -> KV_*
I previously argued this rename was unsafe because much of it was "wire
contract". That was wrong, and the categorisation shows why: RESP command names
are GET/SET/HSET — they never contain the word. Of 5,771 occurrences only two
kinds were server-visible at all: the ParseURL scheme (we choose what we pass;
our configs already use kv://) and the CLIENT SETINFO lib-name label, which the
server merely records. Nothing here changes a byte of protocol.
Two things deliberately keep the old spelling:
RediSearch — names a specific external module the FT.* commands map to.
StoreDist — contains the letters by accident (sto-reDis-t), not the word.
Breaking for consumers by design: every import site must move redis.X -> kv.X.
Minor bump, never a major — this module stays v9 forever.
250 lines
4.1 KiB
Go
250 lines
4.1 KiB
Go
// EXAMPLE: cmds_hash
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// HIDE_START
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package example_commands_test
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import (
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"context"
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"fmt"
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"sort"
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"github.com/hanzokv/go/v9"
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)
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// HIDE_END
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func ExampleClient_hset() {
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ctx := context.Background()
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rdb := kv.NewClient(&kv.Options{
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Addr: "localhost:6379",
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Password: "", // no password docs
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DB: 0, // use default DB
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})
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// REMOVE_START
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// make sure we are working with fresh database
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rdb.FlushDB(ctx)
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rdb.Del(ctx, "myhash")
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// REMOVE_END
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// STEP_START hset
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res1, err := rdb.HSet(ctx, "myhash", "field1", "Hello").Result()
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if err != nil {
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panic(err)
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}
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fmt.Println(res1) // >>> 1
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res2, err := rdb.HGet(ctx, "myhash", "field1").Result()
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if err != nil {
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panic(err)
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}
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fmt.Println(res2) // >>> Hello
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res3, err := rdb.HSet(ctx, "myhash",
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"field2", "Hi",
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"field3", "World",
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).Result()
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if err != nil {
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panic(err)
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}
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fmt.Println(res3) // >>> 2
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res4, err := rdb.HGet(ctx, "myhash", "field2").Result()
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if err != nil {
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panic(err)
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}
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fmt.Println(res4) // >>> Hi
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res5, err := rdb.HGet(ctx, "myhash", "field3").Result()
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if err != nil {
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panic(err)
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}
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fmt.Println(res5) // >>> World
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res6, err := rdb.HGetAll(ctx, "myhash").Result()
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if err != nil {
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panic(err)
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}
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keys := make([]string, 0, len(res6))
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for key := range res6 {
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keys = append(keys, key)
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}
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sort.Strings(keys)
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for _, key := range keys {
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fmt.Printf("Key: %v, value: %v\n", key, res6[key])
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}
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// >>> Key: field1, value: Hello
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// >>> Key: field2, value: Hi
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// >>> Key: field3, value: World
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// STEP_END
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// Output:
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// 1
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// Hello
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// 2
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// Hi
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// World
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// Key: field1, value: Hello
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// Key: field2, value: Hi
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// Key: field3, value: World
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}
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func ExampleClient_hget() {
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ctx := context.Background()
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rdb := kv.NewClient(&kv.Options{
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Addr: "localhost:6379",
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Password: "", // no password docs
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DB: 0, // use default DB
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})
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// REMOVE_START
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// start with fresh database
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rdb.FlushDB(ctx)
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rdb.Del(ctx, "myhash")
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// REMOVE_END
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// STEP_START hget
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res7, err := rdb.HSet(ctx, "myhash", "field1", "foo").Result()
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if err != nil {
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panic(err)
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}
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fmt.Println(res7) // >>> 1
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res8, err := rdb.HGet(ctx, "myhash", "field1").Result()
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if err != nil {
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panic(err)
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}
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fmt.Println(res8) // >>> foo
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res9, err := rdb.HGet(ctx, "myhash", "field2").Result()
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if err != nil {
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fmt.Println(err)
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}
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fmt.Println(res9) // >>> <empty string>
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// STEP_END
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// Output:
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// 1
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// foo
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// kv: nil
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}
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func ExampleClient_hgetall() {
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ctx := context.Background()
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rdb := kv.NewClient(&kv.Options{
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Addr: "localhost:6379",
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Password: "", // no password
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DB: 0, // use default DB
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})
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// REMOVE_START
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// start with fresh database
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rdb.FlushDB(ctx)
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rdb.Del(ctx, "myhash")
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// REMOVE_END
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// STEP_START hgetall
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hGetAllResult1, err := rdb.HSet(ctx, "myhash",
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"field1", "Hello",
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"field2", "World",
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).Result()
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if err != nil {
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panic(err)
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}
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fmt.Println(hGetAllResult1) // >>> 2
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hGetAllResult2, err := rdb.HGetAll(ctx, "myhash").Result()
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if err != nil {
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panic(err)
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}
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keys := make([]string, 0, len(hGetAllResult2))
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for key := range hGetAllResult2 {
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keys = append(keys, key)
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}
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sort.Strings(keys)
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for _, key := range keys {
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fmt.Printf("Key: %v, value: %v\n", key, hGetAllResult2[key])
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}
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// >>> Key: field1, value: Hello
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// >>> Key: field2, value: World
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// STEP_END
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// Output:
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// 2
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// Key: field1, value: Hello
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// Key: field2, value: World
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}
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func ExampleClient_hvals() {
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ctx := context.Background()
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rdb := kv.NewClient(&kv.Options{
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Addr: "localhost:6379",
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Password: "", // no password docs
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DB: 0, // use default DB
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})
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// REMOVE_START
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// start with fresh database
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rdb.FlushDB(ctx)
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rdb.Del(ctx, "myhash")
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// REMOVE_END
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// STEP_START hvals
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hValsResult1, err := rdb.HSet(ctx, "myhash",
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"field1", "Hello",
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"field2", "World",
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).Result()
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if err != nil {
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panic(err)
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}
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fmt.Println(hValsResult1) // >>> 2
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hValsResult2, err := rdb.HVals(ctx, "myhash").Result()
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if err != nil {
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panic(err)
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}
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sort.Strings(hValsResult2)
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fmt.Println(hValsResult2) // >>> [Hello World]
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// STEP_END
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// Output:
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// 2
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// [Hello World]
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}
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