Aerospike 4.5.2: Relaxed Consistency for Increased Availability

Aerospike 4.5.2, released on April 1st, 2019, introduces relaxed consistency for increased availability. This version allows reads from replicas in certain situations to improve performance and reduce costs. The release adds two new relaxed consistency modes: "allow replica" and "allow unavailable." These modes can cause session consistency violations but are beneficial in specific scenarios such as unexpected node crashes during transactions or node splits across racks spanning datacenters or availability zones. Users should carefully consider if certain read consistency violations are acceptable for their applications before using these relaxed consistency modes.