Log store is a persistent record storage system. It can be used in scenarios where records only needs to be appended and replayed, for example in a Write-Ahead Log in distributed systems. This implementation is thread safe and enables fast append, truncate and replay operations.

The major APIs are:

• OpenLogStore(dir string) - Open/Create a log store at the given directory.
• Append(data []byte) - Appends the data as a record in the log store.
• GetPosition() - Returns the current position of the log store.
• Truncate(idx uint64) - Truncates the records before the given index.
• Replay(idx uint64, callback func) - Replays the log store store starting from the given index.
• Close() - Close the log store.