Summary: > We ended up building a key-value store which allows you to save any JSON data without strict schema validation, in a schemaless fashion (hence the n

Summary: > We ended up building a key-value store which allows you to save any JSON data without strict schema validation, in a schemaless fashion (hence the name). It has append-only sharded MySQL with buffered writes to support failing MySQL masters and a publish-subscribe feature for data change notification which we call triggers. Lastly, Schemaless supports global indexes over the data.