Most systems don’t crash because of “bad code.”
They crash because of bad data.
One corrupt record and suddenly queries are garbage
Half a write? Now you’re in inconsistent state hell
Two systems disagree on the “truth”? Phantom bugs forever
This is why stuff like Kafka…
I Love DATABASES. Been nerding out on replication models this week.
Single-leader replication:
one node takes writes, others just copy
simple + consistent
downside: leader becomes the bottleneck, failover hurts
Multi-leader replication:
multiple nodes can accept writes
great…
I love DATABASES.
I was reading this week about how Postgres connection pooling can quietly kill performance.
Too many idle connections pile up -> memory bloat + file descriptors eaten -> Postgres ends up spending more time handling connections than serving queries.
Simple…
Was working on a side project in Go the other night and ran into a stupid crash. No clue where it was coming from.
Instead of scrolling through the code, forced myself to slow down and stick to a process:
cut code in half until I isolated it (binary search style)
reproduced it…
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