Redis vs Aerospike

gistfile1.txt

**********Redis***************
Single threaded 
      No need to worry about locks
      Cannot explore multiple cores.Need to run multiple instance in multiple coress.
      Both master and slave in the same machine. Master goes down there is high change for data loss

Data structures
    Rich data structures. Lot of operation on data structures is supported natively.
    Nested data structures is not supported.

Performance
    Tuned for in memory
    LRU cache

Persistance
    Optional snapshot to appendonly file. 
    Will take to lot of time to reconstruct data after restart of redis.

Replication
    Manually configure and master and slave
    Not rackaware
    Asynchornous replication.

Sharding 
    Need to handle at application level
    Auto rebalancing of keys when node goes down is not supported. They have plan to add in future.

Auto Clustering => Redis 3.0 or above
      Some manual step involved.

Supports PubSub


********Aerospike**************

Multi threaded

Data structures
   Basic data structures
   Nested data structures is supported. Less operations on DS is natively supported

Performance
    Tuned for in memory/SSD
    Aerospike can run with data in-memory or directly off SSDs (using its own file system), usually within 1 millisecond. Using SSDs saves money and increases the amount of storage per node.This use of SSD enables enormous vertical scaleup at a 5x lower total cost of ownership (TCO) than pure RAM.
    LRU cache

Persitance
    SSD, Inmemory, Inmemory + incremental snapshot in harddisk.
    Warm restart capability=> Indexes are stored in memory even the process goes down. 
                              This will reduce restart time significantly

Replication 
    Auto assignment of master and slave
    Synchronous replication 
    Rackawareness in replication (Wont keep same master and slave in same machine).

Sharding 
  Auto sharding
  Auto rebalancing of keys when node goes down

Auto Clustering
  No need to handle clustering logic in application

Known limitations = https://www.aerospike.com/docs/guide/limitations.html