feat: 天气数据通过redis缓存

README.md

@@ -6,4 +6,8 @@
 框架是 Hertz: https://www.cloudwego.io/zh/docs/hertz/getting-started/
 安装hz工具: go install github.com/cloudwego/hertz/cmd/hz@latest
 修改 idl/WeatherAndEarthquake.thrift 文件后，在根目录执行:
-hz update -idl ./idl/WeatherAndEarthquake.thrift 就会更新新加的内容
+hz update -idl ./idl/WeatherAndEarthquake.thrift 就会更新新加的内容
+
+
+## 安装 go-redis
+go get github.com/go-redis/redis/v8

configs/config.yaml

@@ -6,10 +6,13 @@ server:
 data:
   redis:
     addr: 127.0.0.1:6379
-    password: Abc123..
+    password:
     read_timeout: 0.2s
     write_timeout: 0.2s
-    db: 1
+    db: 0
+    pool_size: 16
+    min_idle_conns: 4
+    expire: 3600
 
 accu_weather:
   api_key: zpka_0e750f6b405446f389a3a7d954c780b6_63fd410f

go.mod

@@ -15,10 +15,13 @@ require (
 	github.com/bytedance/gopkg v0.1.1 // indirect
 	github.com/bytedance/sonic v1.14.0 // indirect
 	github.com/bytedance/sonic/loader v0.3.0 // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
 	github.com/cloudwego/base64x v0.1.5 // indirect
 	github.com/cloudwego/gopkg v0.1.4 // indirect
 	github.com/cloudwego/netpoll v0.7.0 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/fsnotify/fsnotify v1.5.4 // indirect
+	github.com/go-redis/redis/v8 v8.11.5 // indirect
 	github.com/golang/protobuf v1.5.0 // indirect
 	github.com/klauspost/cpuid/v2 v2.0.9 // indirect
 	github.com/nyaruka/phonenumbers v1.0.55 // indirect

go.sum

@@ -7,6 +7,8 @@ github.com/bytedance/sonic v1.14.0/go.mod h1:WoEbx8WTcFJfzCe0hbmyTGrfjt8PzNEBdxl
 github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU=
 github.com/bytedance/sonic/loader v0.3.0 h1:dskwH8edlzNMctoruo8FPTJDF3vLtDT0sXZwvZJyqeA=
 github.com/bytedance/sonic/loader v0.3.0/go.mod h1:N8A3vUdtUebEY2/VQC0MyhYeKUFosQU6FxH2JmUe6VI=
+github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
+github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cloudwego/base64x v0.1.5 h1:XPciSp1xaq2VCSt6lF0phncD4koWyULpl5bUxbfCyP4=
 github.com/cloudwego/base64x v0.1.5/go.mod h1:0zlkT4Wn5C6NdauXdJRhSKRlJvmclQ1hhJgA0rcu/8w=
 github.com/cloudwego/gopkg v0.1.4 h1:EoQiCG4sTonTPHxOGE0VlQs+sQR+Hsi2uN0qqwu8O50=
@@ -20,8 +22,12 @@ github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+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=
 github.com/fsnotify/fsnotify v1.5.4 h1:jRbGcIw6P2Meqdwuo0H1p6JVLbL5DHKAKlYndzMwVZI=
 github.com/fsnotify/fsnotify v1.5.4/go.mod h1:OVB6XrOHzAwXMpEM7uPOzcehqUV2UqJxmVXmkdnm1bU=
+github.com/go-redis/redis/v8 v8.11.5 h1:AcZZR7igkdvfVmQTPnu9WE37LRrO/YrBH5zWyjDC0oI=
+github.com/go-redis/redis/v8 v8.11.5/go.mod h1:gREzHqY1hg6oD9ngVRbLStwAWKhA0FEgq8Jd4h5lpwo=
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.5.0 h1:LUVKkCeviFUMKqHa4tXIIij/lbhnMbP7Fn5wKdKkRh4=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=

internal/config/config.go

@@ -14,6 +14,9 @@ type Redis struct {
 	ReadTimeout  time.Duration `yaml:"read_timeout"`
 	WriteTimeout time.Duration `yaml:"write_timeout"`
 	DB           int           `yaml:"db"`
+	PoolSize     int           `yaml:"pool_size"`
+	MinIdleConns int           `yaml:"min_idle_conns"`
+	Expire       time.Duration `yaml:"expire"` // 数据保存时间，单位秒
 }
 
 type Data struct {

internal/data/weather_cache.go

@@ -1,5 +1,46 @@
 package data
 
-import "weather_and_earthquake/internal/config"
+import (
+	"context"
+	"github.com/go-redis/redis/v8"
+	"time"
+	"weather_and_earthquake/internal/config"
+)
 
-var DataConf *config.Data
+var _redis *redis.Client
+var _expire time.Duration
+
+// 初始化 redis 连接
+func InitWeatherCache(ctx context.Context, data *config.Data) error {
+	_redis = redis.NewClient(&redis.Options{
+		Addr:         data.Redis.Addr,
+		Password:     data.Redis.Password,
+		DB:           data.Redis.DB,
+		ReadTimeout:  data.Redis.ReadTimeout * time.Second,
+		WriteTimeout: data.Redis.WriteTimeout * time.Second,
+		PoolSize:     data.Redis.PoolSize,
+		MinIdleConns: data.Redis.MinIdleConns,
+	})
+	_expire = data.Redis.Expire
+
+	_, err := _redis.Ping(ctx).Result()
+	return err
+}
+
+// 设置某个地方的天气情况，默认保留1小时数据
+func SetWeatherCondition(ctx context.Context, key, condition string) error {
+	_, err := _redis.SetNX(ctx, key, condition, _expire*time.Second).Result()
+	return err
+}
+
+// 查找某个地方的天气情况
+func GetWeatherCondition(ctx context.Context, key string) (string, error) {
+	value, err := _redis.Get(ctx, key).Result()
+	if err == nil {
+		return value, nil
+	} else if err == redis.Nil {
+		return "", nil
+	} else {
+		return "", err
+	}
+}