A Journey of a Thousand Miles: Aerospike 3.8 Supercharges Cross Datacenter Replication (XDR)

The text discusses how Aerospike 3.8 improves Cross Datacenter Replication (XDR) by addressing the challenge of high network latency between data centers located thousands of miles apart. It explains that traditional methods of handling this issue, such as using multiple TCP connections or batch-based writes, have limitations and can lead to inefficiencies. Aerospike 3.8 introduces pipelining, which allows for continuous sending of write operations without waiting for responses, thereby eliminating the impact of round-trip time on throughput. The text also highlights how TCP tuning is used to optimize XDR performance and mentions that future improvements may include support for out-of-order responses. Overall, these enhancements enable Aerospike 3.8 to effectively replicate write loads across high-latency links, improving the real-world experience of users with data centers around the globe.