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Add randomkey command

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This commit is contained in:
bijingrui
2023-04-09 21:46:05 +08:00
committed by finley
parent d0a7a215ba
commit 6103ca01c0
4 changed files with 26 additions and 0 deletions
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11
database/string.go
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@@ -827,6 +827,16 @@ func execBitPos(db *DB, args [][]byte) redis.Reply {
return protocol.MakeIntReply(offset)
}
// GetRandomKey Randomly return (do not delete) a key from the godis
func getRandomKey(db *DB, args [][]byte) redis.Reply {
k := db.data.RandomKeys(1)
if len(k) == 0 {
return &protocol.NullBulkReply{}
}
var key []byte
return protocol.MakeBulkReply(strconv.AppendQuote(key, k[0]))
}
func init() {
RegisterCommand("Set", execSet, writeFirstKey, rollbackFirstKey, -3, flagWrite)
RegisterCommand("SetNx", execSetNX, writeFirstKey, rollbackFirstKey, 3, flagWrite)
@@ -852,5 +862,6 @@ func init() {
RegisterCommand("GetBit", execGetBit, readFirstKey, nil, 3, flagReadOnly)
RegisterCommand("BitCount", execBitCount, readFirstKey, nil, -2, flagReadOnly)
RegisterCommand("BitPos", execBitPos, readFirstKey, nil, -3, flagReadOnly)
RegisterCommand("Randomkey", getRandomKey, readAllKeys, nil, 1, flagReadOnly)
}