MicroBlitz: Spin Up Dynamic APIs in Minutes
Ever found yourself needing a quick API for testing, demos, or experimenting with microservices, but all existing frameworks felt too heavy or slow? That’s exactly the problem I faced in my day-to-day work.
To solve it, I created MicroBlitz—a Node.js project that allows me to generate dynamic APIs in minutes, lightweight and fast, ready to run on my personal server managed with Coolify.
If you’re curious about the technical architecture, performance optimizations, and workflow, check out the full project article here.
Why MicroBlitz Exists
In my work, I often need to:
- Test APIs quickly before integrating them into larger projects
- Trigger external service calls and check responses
- Log events or debug integrations
- Create client demo endpoints in minutes
Existing tools were either too heavy, slow to start, or over-engineered for these simple tasks. MicroBlitz solves this by being fast, minimal, and fully controllable. Writing it from scratch allowed me to optimize performance, memory usage, and workflow simplicity.
Node.js + Fastify: The Stack Behind the Speed
Node.js was the natural choice: non-blocking, event-driven, and perfect for handling multiple requests concurrently without overloading the server.
I paired it with Fastify for its blazing speed, low memory footprint, and built-in schema validation. This combination makes MicroBlitz:
- Lightning-fast for small and mid-sized servers
- Resource-efficient, even on personal machines
- Reliable and maintainable, with schema validation out of the box
In short, Node.js + Fastify allows me to iterate quickly, deploy lightweight microservices, and experiment without overhead.
How MicroBlitz Works
The workflow is intentionally simple:
- Drop a
.jsfile into thefunctions/folder - MicroBlitz automatically exposes it as an API endpoint
- Restart the server and the endpoint is live
No boilerplate, no complex configuration, just dynamic API creation in minutes.
Use Cases: From Testing to Demos
MicroBlitz shines in practical scenarios:
- API Testing: Quickly spin up endpoints for dev or QA
- Integration Experiments: Trigger and log external service calls
- Event Recording: Capture responses and debug logs
- Client Demos: Show live, interactive APIs without setup delays
All of this runs lightweight and fast on my personal server, perfect for experimentation or demos.
Final Thoughts: Fast, Flexible, and Practical
MicroBlitz proves that API creation doesn’t need to be slow or complicated. With Node.js, Fastify, and a simple folder-based approach, I can prototype microservices, test integrations, and deliver demos in minutes, keeping performance and simplicity at the forefront.
For the full technical breakdown, including architecture, multicore optimization, and dynamic API handling, check out the project article here.