MehradSadeghi

M
MehradSadeghi
3 posts
Circuit Breaker Pattern Explained: How to Prevent Cascading Failures in Distributed Systems
What happens when one service fails, but your entire system keeps calling it anyway ? Imagine your payment service is down. Normally, every purchase request follows a path like this: User ↓ Order Ser
Sep 16, 202619 min read
MySQL Overselling: Why SELECT Isn't Enough and How SELECT ... FOR UPDATE Solves It
Imagine you’re running an online store, there’s exactly one item left in stock. Two customers click Buy at almost exactly the same time. Both requests reach your application. Both transactions ask the
Sep 13, 20268 min read2
Two Transactions, One Row: What Does MySQL Actually Let You See ?
Two users, One database row, Both reading and writing at almost exactly the same time. Who sees what ?
Sep 13, 20268 min read2