I Replaced My Express.js App With Fastify — Here’s What Happened

📰 Medium · Python

Learn how switching from Express.js to Fastify impacted performance and development workflow

intermediate Published 15 Apr 2026
Action Steps
  1. Assess your current Express.js app's performance bottlenecks
  2. Research Fastify's features and plugins
  3. Migrate a small module of your Express.js app to Fastify
  4. Compare the performance differences between the two frameworks
  5. Evaluate the compatibility of your existing middleware and libraries with Fastify
Who Needs to Know This

Backend developers and engineers can benefit from this comparison to inform their framework choices and optimize their application's performance

Key Insight

💡 Fastify can offer significant performance improvements over Express.js, but migration requires careful planning and evaluation

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💡 Ditch Express.js for Fastify? Learn from one dev's experience #Fastify #Expressjs #Nodejs
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