Memory Forgets, Disks Remember: Binlog vs. WAL vs. Transaction Log
When your production server starts coughing up errors, a DBA does not cry. RAM is as forgetful as wedding vows, and only an append-only log on disk remembers our sins down to the exact microsecond. All three heavyweights: MySQL, PostgreSQL, and SQL Server rely on the same core concept (Write-Ahead Logging): carve “I changed this row” into granite first, flush the buffer to disk, and only then pretend the data safely lives in the tables. But the devil, as always, lives in details.