Rigorous trainer selection
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
- Triple validation: technical, pedagogical, sectoral.
- Minimum rating 4.8/5 over the last 12 sessions.
Describe your need, get a tailored program and a pre-filled quote in 3 min. A 100% free call with an advisor.
Founded by passionate learning and innovation experts, Learni's mission is to make professional training accessible to everyone, anywhere in the world. Our team operates in major hubs — London, New York, Boston — and internationally, to support talents and organizations in upskilling.
Don't let this gap widen
Without this upskilling, your team accumulates a technological gap that translates directly into productivity loss.
Organizations that don't train their talents on key topics see their competitiveness drop.
Every quarter without training is a gap widening with competitors who invest.
The cost of inaction quickly exceeds that of well-targeted training.
Discover the quick installation of Fastify via npm, configure a basic server with integrated logging, implement your first GET/POST routes with JSON schemas, explore lifecycle hooks for event interception, complete practical exercises on a simple API project, test with tools like Artillery to measure initial performance, obtain a functional deliverable ready for extension.
Dive into the Fastify plugin system to modularize your code, create custom plugins with decorators, integrate third-party libraries like Pino for advanced logging, manage plugin dependencies via encapsulation, develop an exercise on a multi-module API with basic authentication, debug with Fastify CLI, produce a scalable modular prototype for enterprise use.
Master automatic validation with native JSON Schema, configure Ajv for complex rules on queries/params/body, implement custom serialization for optimized responses, handle 4xx errors with unified handlers, apply to a concrete e-commerce API case with large payloads, test via automated Postman collections, deliver a validated module ready for professional production.
Optimize pure asynchronous code with generators and Fastify streams, enable native clustering for multi-core, benchmark with autocannon against Express, reduce latency via optimized reply.send, integrate Redis caching for hot endpoints, complete a lab on high-load API simulating 10k req/s, obtain precise metrics and an actionable optimization report.
Prepare Dockerized deployment of your Fastify app, configure GitHub Actions pipelines for tests/lint/deploy, integrate Prometheus and Grafana for real-time monitoring, secure with Helmet and rate-limiting, apply to a complete final RESTful API project, review enterprise best practices like zero-downtime, finish with a cloud-deployed deliverable and skills certification.
The Training Fastify - Develop Ultra-High-Performance APIs program is delivered onsite or remote (blended-learning, e-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.
The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.
For the smooth delivery of the Training Fastify - Develop Ultra-High-Performance APIs program, the following equipment is required:
For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.
Assessment of skills acquired during the Training Fastify - Develop Ultra-High-Performance APIs program is performed through:
Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.
Learni programs are available inter-company and intra-company, onsite or remote. Enrollments are possible up to 48 business hours before the program starts. Our programs are eligible for corporate funding paths. Contact us to discuss your training project and funding options.
« cool, j'ai appris des trucs »
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
« 😊👍 »
« bien 👍 »
« Allan Busi t'es au top, continue comme ça. formation géniale »
« cool, j'ai appris des trucs »
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
« 😊👍 »
« bien 👍 »
« Allan Busi t'es au top, continue comme ça. formation géniale »
« cool, j'ai appris des trucs »
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
« 😊👍 »
« bien 👍 »
« Allan Busi t'es au top, continue comme ça. formation géniale »
Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.
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Intelligence ArtificielleIndustry-certified30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.