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Prince Singh

A software engineer who works mostly with Java and web backends. I spend a lot of my time working out why a system behaves the way it does, and this blog is where I write those answers down.

Joined Joined on  Personal website https://sudoexplain.dev/

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Software Engineer 2

Race condition in Java: check-then-act explained
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Race condition in Java: check-then-act explained

#java #concurrency
1
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9 min read

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Idempotency key: stop a retry from charging twice
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Idempotency key: stop a retry from charging twice

#api #payments
1
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7 min read
Java memory leak: strong references and heap dumps
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Java memory leak: strong references and heap dumps

#java #jvm
1
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9 min read
Slow SQL query: find a missing index with EXPLAIN
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Slow SQL query: find a missing index with EXPLAIN

#database #performance #sql
1
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11 min read
HikariPool-1 Connection is not available: pool exhausted
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HikariPool-1 Connection is not available: pool exhausted

#java #database #performance
1
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11 min read
N+1 query problem in Hibernate and JPA: find it and fix it
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N+1 query problem in Hibernate and JPA: find it and fix it

#java #database #performance
1
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13 min read
Stale cache and cache stampede: why servers disagree
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Stale cache and cache stampede: why servers disagree

#caching #scaling #web
1
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10 min read
Sessions, JWTs and load balancers explained
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Sessions, JWTs and load balancers explained

#authentication #web #scaling
1
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14 min read
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