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• Postgres – Introduction
  Postgres · Mar 6, 2018 · 6 min read
  What Postgres actually is under the marketing: one process per connection, a write-ahead log, and MVCC — which is why a reader never blocks a writer and why VACUUM has to exist. Which version to run, what the release cycle promises, and an honest table of where Postgres beats MySQL, where it does not, and the three questions worth asking before you pick either.
• Recursion in Coding Interviews
  Fundamental Problems · Feb 7, 2018 · 5 min read
  Most people can explain what recursion is and still freeze when a problem needs it under time pressure. The three questions that turn a blank page into a fill-in-the-blanks exercise, the leap of faith that stops you tracing calls in your head, when recursion is the wrong tool, and how to reason about the cost of a branching search.
• Testing
  Spring Interview · Feb 5, 2018 · 1 min read
• Security
  Spring Interview · Feb 5, 2018 · 1 min read
• Web
  Spring Interview · Feb 5, 2018 · 1 min read

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