Nice to see how Postgres (a relative of Informix) follows an old-school maxim to focus on Consistency and Durability by being "append-only" and never over-writi

Nice to see how Postgres (a relative of Informix) follows an old-school maxim to focus on Consistency and Durability by being "append-only" and never over-writing the data. Sticking to the right principles is better than over-optimization. The Uber engineers should, perhaps, take a look at Changelogs of last 5 or so releases of MySQL to see how many bugs in InnoDB has been found in each release and read stories about data loses due to inability to repair storages. According to old-school DBA tradition, it is much better to have an straightforward storage engine based on right principles written in C than fancy storage written in C++. At least if one values ones data. Well, in the age of in-memory "databases", "durability through replication" and "eventual consistency" old school focus on disk commits might sound a bit outdated, until one gets that moment when shards got messed up and there is no way to know how many writes are missing and where. Database is a durable storage which guarantees data consistency and ability to roll-back to a clean state through direct-access (by passing all caches) writes. At lest this is what we had in glorious times of IDS 7.3