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ACID And B-Trees Vs Logs

Julia Evans shares some things she’s learned about databases lately:

the write-ahead log

This chapter also helped me understand what’s going on with write-ahead logs better! Write-ahead logs are different from log-structured storage, both kinds of storage engines can use write-ahead logs.

Recently at work the team that maintains Splunk wrote a post called “Splunk is not a write-ahead log”. I thought this was interesting because I had never heard the term “write-ahead log” before!

There are a few different topics in here, all of which are important to understand how databases work.