This was originally “Yahoo! Traffic Server”, was developed by Yahoo! in the early 2000’s and was used in part to power Yahoo! CDN. At the time Yahoo! relied on Akamai and its own network.
I really like the idea behind Concord. No longer have to stress about Hadoop/YARN platform, and I can use the language of my choice (haven't used JVM-based stack in ages).
Is there documentation on adding more input/output sources?
This is definitely a big step forward. I had become spoiled by Go's cross compile capabilities, which Rust had paled in comparison to. Prior to this, it was a pain having to get the right toolchain for each platform. With this, I can download the toolchain as needed for the target platform, and build against it.
Aerospike maintains a comprehensive set of tests for the server. Every commit goes through functional and regression tests. Each release goes through a gauntlet of performance and clustering tests. The test system is a standalone system from the database, and is integrated with our CI system. Unfortunately, we have not been able to publish our test system, yet.