Understanding database indices by (poorly) implementing oneOr: building an intuition for how databases use indices
Should we be cachingOr: how to talk yourself out of one of the hardest problems in computers
Understanding MySQL Multiversion Concurrency ControlIn which we figure out how MySQL writes new data without showing it in old queries.
Understanding the Elasticsearch PercolatorIn which we flip search on its head and save *searches* then search with *documents*.
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