Is Redis free to use?
You can use the full capabilities of Redis Enterprise Software, but you cannot deploy it to production. It allows a maximum of four shards and does not provide the same support options as the paid version. The free version has a 14 day time limit, after which no more configuration changes can be done.
Is Redis cluster free?
If you just want to test Redis itself, you can get it up and running really fast with Redistogo. On the free plan, you can hook up a hosted Redisdb (with 5MB memory) to your app and test for any improvements or changes. The account provides you a URL with a port to send and receive data to and from.
How expensive is Redis?
Redis Enterprise Pricing
| Name | Price |
|---|---|
| Standard | $71per month |
| Multi-AZ | $93per month |
| Cache | $22per month |
Is Redis persistent?
Yes, Redis is persistent but due to its memory limits it is not for all cases. First, not all applications need fast access. Second, memory is expensive. It’s much less expensive to store you data on a hard drive when you need to access it rarely or when accessing speed is not critical.
Is Redis open source and free?
Redis is open sourced, available under the 3-Clause-BSD license. Redis Modules, which are add-ons on top of Redis, are created by people in the community and bear different licenses according to each creator’s choice. Redis Enterprise is closed source and requires a commercial license from Redis Ltd.
How much RAM do I need for Redis?
Production environment
| Item | Minimum Requirements | Recommended |
|---|---|---|
| RAM* per node | 15GB | >=30GB |
| Ephemeral Storage | RAM x 2 | >= RAM x 4 |
| Persistent Storage | RAM x 3 | In-memory >= RAM x 6 (except for extreme ‘write’ scenarios); Redis on Flash >= (RAM + Flash) x 5. |
| Network | 1G | >=10G |
What happens when Redis crashes?
When Redis goes down, you have to deal with it. It is the same as if your file system is gone or your SQL Server is down. A lot of those systems disable all writes and set their cluster in maintenance state.
Can Redis run out of memory?
What happens if Redis runs out of memory? If this limit is reached Redis will start to reply with an error to write commands (but will continue to accept read-only commands), or you can configure it to evict keys when the max memory limit is reached in the case where you are using Redis for caching.