How does redis store strings internally?

[petulia3478]

For strings representing 64-bit signed integers, the type of strings will be int

For strings whose length is less or equal to 44 bytes (this used to be 39 bytes in Redis 3.x); this type of encoding is more efficient in memory usage and performance, the strings type is embstr

For strings whose length is greater than 44 bytes, the type is raw