SQLite or PostgreSQL? It’s Complicated!
At some point I realized that some queries were taking a few seconds to produce results, so I started to wonder if a more robust database such as PostgreSQL would provide better performance. Having publicly professed my dislike of performance benchmarks, I resisted the urge to look up any comparisons online, and instead embarked on a series of experiments to accurately measure the performance of these two databases for the specific use cases of this application. What follows is a detailed account of my effort, the results of my testing (including a surprising twist!), and my analysis and final decision, which ended up being more involved than I expected. […] If you are going to take one thing away from this article, I hope it is that the only benchmarks that are valuable are those that run on your own platform, with your own stack, with your own data, and with your own software. And even then, you may need to add custom optimizations to get the best performance.
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