Spec Azure, Google, Redis Labs' offering (x-AZ/Region, Lua support/pipeline support, sharded?)

[alexsnaps]

Azure, Google and Redis Labs all provide other "Redis API/Protocol" compatible solution that may somewhat cover some of the usecases described in Kuadrant/architecture#62

We need a matrix that document support for these usecases, as well as support for:

• server-side Lua scripts
• Pipelining
• What sharding strategy they support

[eguzki]

Capability / Feature	Elasticache for Redis	Azure Cache for Redis	Google Memorystore for Redis	Redis Enterprise
Active - Active	No	Premium plan passive geo-replication across regions Enterprise plan active geo-replication across regions	No	Active-Active geo-distributed Redis
x-AZ/Region	Any Elasticache instance runs only in one region doc and nodes can be located in a single or multi AZ. Global Datastore feature you can have replication across AWS regions in Active (writes/reads)-Passive(only reads) mode	Any Azure cache for redis instance runs only in one region and redundancy caches can be located in a single or multi AZ.	Any memorystore instance run only in one region. Nodes can be distributed on multiple AZ. There is a guide to setup a proxy that will replicate keys in two cross-regional redis instances. But this would be Active-Passive architecture. This approach is not fully managed.	Redis Cloud is Multi-zone
Sharding strategy	Cluster mode only	Starting from the Premium tier, redis cluster automatically shards data across up to ten Redis nodes	Memorystore for redis cluster in a single region	Called Clustering
Server-side lua scripts	Yes	Yes. Configuration doc for max execution time of a Lua script in milliseconds	Yes. Configuration doc for lua time limit which cannot be modified	Yes with limitations with multy key operations
Pipelining	Yes doc	Yes doc	Yes (I haven't found direct reference to pipelines or note rejecting them)	Yes
HA	High availability using replication groups	Standard replication for high availability Zone redundancy geo replication	Memorystore for Redis provides high availability by replicating a Redis primary to one or more replicas. Same for Redis Cluster mode	High availability and replication
Disaster recovery	Snapshot and restore	Data persistence with RDB (snapshot) and AOF persistence	RDB snapshots and exporting data	Back up a database

Currently limitador only implements redis client with cluster mode off. The redis-rs library has support for cluster mode.

[eguzki]

While elasticache seems to be a system implementing "Redis API", Azure cache looks like deploys instances of open source redis or redis enterprise in premium/enterprise plans. The configuration options and portfolio of features can me mapped one to one with the open source and enterprise redis.

[alexsnaps]

@eguzki anything pending here, or do we feel we can close this Issue?

[eguzki]

I think we can close this. In 6 months the offering can change. WE can have this report as base line to compare.