


How to efficiently store and read Go structure arrays to Redis using go-redis/redis v8?
Apr 02, 2025 pm 04:51 PM This article discusses how to efficiently store and read Go structure arrays to Redis using go-redis/redis v8
Saving the Go structure array directly to Redis will cause an error, because the SET
command of go-redis/redis v8
only supports string type key-value pairs.
The following code snippet demonstrates trying to store an array of type []model.sysrolemenu
directly to Redis and explains the cause of the error. The code is designed to get the menu tree structure and store it in Redis for quick access. After getting the getmenutree
tree data, I tried to use global.gva_redis.set
to directly store the menus
array, but because SET
method requires the value to be a string type, it failed.
The workaround is to convert the []model.sysrolemenu
array to a JSON string supported by Redis. After serializing it into a JSON string, it can be successfully stored in Redis; when reading it, it will be deserialized back to the Go structure array.
The modified getmenutree
function is as follows, converting menus
arrays to JSON strings before saving to Redis:
import ( "context" "encoding/json" "github.com/go-redis/redis/v8" "go.uber.org/zap" ) // ... other imports and code ... func GetMenuTree(roleId string) (err error, menus []model.SysRoleMenu) { err, menuTree := GetMenuTreeMap(roleId) menus = menuTree["0"] // ... other code ... jsonData, err := json.Marshal(menus) if err != nil { zap.L().Error("json marshal error", zap.Error(err)) return err, nil } err = global.gvaRedis.Set(context.Background(), "menuTree:" roleId, string(jsonData), 0).Err() if err != nil { zap.L().Error("redis set error", zap.Error(err)) return err, nil } return nil, menus } //A sample to read data func ReadMenuTree(roleId string) (err error, menus []model.SysRoleMenu) { val, err := global.gvaRedis.Get(context.Background(), "menuTree:" roleId).Result() if err != nil { if err == redis.Nil { return nil, nil //Key does not exist} return err, nil } err = json.Unmarshal([]byte(val), &menus) if err != nil { zap.L().Error("json unmarshal error", zap.Error(err)) return err, nil } return nil, menus }
Encode menus
array into a JSON string through the json.Marshal
function and store it in Redis. When reading data, use json.Unmarshal
for deserialization. This solves the problem that go-redis/redis v8
does not support direct storage of array structures.
The above is the detailed content of How to efficiently store and read Go structure arrays to Redis using go-redis/redis v8?. For more information, please follow other related articles on the PHP Chinese website!

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