A slow API endpoint can be caused by database queries, third-party API calls, or your own application code. Here's how to figure out which one it is, without adding console.log everywhere.
An N+1 query is a database anti-pattern where your code runs 1 query to get a list, then N more queries to get related data for each item. Most ORMs make it easy to write. Here's how to find and fix them.
Developer A builds the dashboard. Developer B builds settings. Developer C builds checkout. All three query the same table on every page load. Nobody knows. The problem isn't in any file. It's in the space between files.
LiteLLM was compromised yesterday. A malicious version stole credentials from every machine it was installed on. Every dev tool has the same risk profile. Here are some learnings for every dev tool builder.
Most Next.js apps unknowingly run the same database query across multiple components and API routes. Nobody notices because each request returns 200 OK. Here's how to find and fix them.
Your endpoint returns 200. But do you know how many database queries ran behind it? Brakit is an open source dev tool that captures every request, query, and fetch your API makes, grouped by what the user actually did.
