Distributed Systems Patterns
Append Only Log
Append only log appends logs to disk. It is used to ensure readers of the data do not lose the data if they crash.
See AppendOnlyLog.scala for implementation.
Write Ahead Log
Write Ahead Log uses Append Only Log to persist data. Additionally it stores the data in memory. It provides durability with faster reads.
See DurableKVStore.scala for implementation.