deadlock-prevention
Deadlock Prevention
Overview
When two processes wait for each other forever, you have a deadlock.
Deadlocks are permanent freezes—no crash, no error, just silence. They occur when processes hold resources while waiting for resources held by others, creating circular wait.
When to Use
- Acquiring multiple locks or resources
- Nested transactions across tables/services
- Distributed systems with cross-service calls
- "System freezes under load"
- No errors but operations never complete
The Iron Rule
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