Redis is an in-memory data structure store that can be used as a database, cache, and message broker. The amount of data Redis can store is primarily limited by the available system memory (RAM) on the machine it's running on. However, Redis also supports persistence to disk, which can help increase the amount of storable data.
The maximum data storage for Redis depends on:
For example, if you use a Redis String data type for values, each value can store up to 512MB, theoretically allowing Redis to store up to 2TB of data just in string values. However, this assumes you have enough system memory to accommodate such a large dataset.
Here's a simplified calculation for estimating Redis storage capacity:
Total Storage Capacity = Total Available RAM - (Overhead for Redis metadata + OS usage)
To increase the storage capacity of Redis, you can consider the following strategies:
Keep in mind that increasing the amount of stored data may impact performance, as Redis is optimized for low latency in-memory operations. Make sure to monitor and benchmark your Redis setup as you scale its storage capacity.
Dragonfly is fully compatible with the Redis ecosystem and requires no code changes to implement.