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user_info.go
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/
user_info.go
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package ctl
import (
"context"
"encoding/json"
"time"
"github.com/CocaineCong/micro-todoList/app/user/repository/cache"
"github.com/redis/go-redis/v9"
)
var userKey string = "user_key"
type UserInfo struct {
Id uint `json:"id"`
}
func InitUserInfo(ctx context.Context, user *UserInfo) error {
cachedUser, err := GetUserInfo(ctx)
if err != nil {
return err
}
// 如果缓存中存在用户信息,直接返回
if cachedUser != nil {
return nil
}
// 如果缓存中不存在用户信息,将用户信息存储到缓存中
if err := SetUserInCache(ctx, user, cache.RedisClient); err != nil {
return err
}
return nil
}
func GetUserInfo(ctx context.Context) (*UserInfo, error) {
data, err := cache.RedisClient.Get(ctx, userKey).Bytes()
if err == redis.Nil {
return nil, nil
} else if err != nil {
return nil, err
}
var user UserInfo
if err := json.Unmarshal(data, &user); err != nil {
// 解码数据时出错
return nil, err
}
return &user, nil
}
func SetUserInCache(ctx context.Context, user *UserInfo, redisClient *redis.Client) error {
data, err := json.Marshal(user)
if err != nil {
return err
}
if err := redisClient.Set(ctx, userKey, data, time.Second*30).Err(); err != nil {
return err
}
return nil
}