Dealing With Contention easy
Do multiple threads reading the same immutable constant cause race conditions?
- A Yes, always.
- B No. Reads are safe if data doesn't change. Race conditions require at least one Writer.
- C Only in Java.
- D Yes, if they read fast enough.
Answer: B. No. Reads are safe if data doesn't change. Race conditions require at least one Writer.
Immutability is the ultimate thread-safety pattern. No locks are needed for read-only data.
One system design question a day, with spaced repetition so the ones you miss come back.
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