@mehradsadeghi

Mehrad

@mehradsadeghiJoined September 2026

Here is the place where I share my knowledge and experiences in technologies, life and etc.

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Mehrad's blogs

MehradSadeghimehradsadeghi.hashnode.dev3 posts

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MMehradmehradsadeghi.hashnode.dev2d ago · 19 min read

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

MMehradmehradsadeghi.hashnode.dev5d ago · 8 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

MMehradmehradsadeghi.hashnode.dev5d ago · 8 min read

Two Transactions, One Row: What Does MySQL Actually Let You See ?

Can one transaction see another transaction’s uncommitted changes ? Can the same query return different results inside a single transaction ? And why does SELECT sometimes give you a snapshot, while S

Mehrad

About

Available for

Mehrad's blogs

Recently published

Circuit Breaker Pattern Explained: How to Prevent Cascading Failures in Distributed Systems

MySQL Overselling: Why SELECT Isn't Enough and How SELECT ... FOR UPDATE Solves It

Two Transactions, One Row: What Does MySQL Actually Let You See ?

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Mehrad

About

Available for

Mehrad's blogs

Recently published

Circuit Breaker Pattern Explained: How to Prevent Cascading Failures in Distributed Systems

MySQL Overselling: Why SELECT Isn't Enough and How SELECT ... FOR UPDATE Solves It

Two Transactions, One Row: What Does MySQL Actually Let You See ?