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Learn to build Backend APIs

Hands-on, interactive tutorials you can start right now — no login required. Read the lessons, write code in the browser, and run it instantly. Subscribe to save your progress and earn XP.

27 tracks 97 sections 271 exercises
Beginner
5 courses
Intermediate
6 courses
Advanced
16 courses

Advanced Backend

Scale with Redis caching, decouple with message queues and push live data over WebSockets.

3 sections 9 exercises
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Kubernetes

Orchestrate containers with kubectl, Pods, Deployments, Services and rolling updates.

3 sections 9 exercises
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GraphQL APIs

Design schemas, write resolvers and handle queries/mutations with type safety.

3 sections 9 exercises
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gRPC Services

Build high-performance RPC services with Protocol Buffers and streaming.

3 sections 9 exercises
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System Design & Scalability

Master caching layers, load balancing, sharding, and the CAP theorem.

3 sections 9 exercises
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Event-Driven Architecture

Decouple with RabbitMQ/Kafka, event sourcing, and idempotent projections.

3 sections 9 exercises
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API Gateways & Service Mesh

Route, rate-limit, and observe traffic with nginx, Traefik, Istio and Envoy.

3 sections 9 exercises
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Git Pro Workflow

Master interactive rebase, cherry-pick, bisect, and trunk-based CI with protected branches.

3 sections 9 exercises
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Linux & Bash Automation

Write robust shell scripts: arrays, awk/sed, cron, systemd units, and performance profiling.

3 sections 9 exercises
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Agentic AI Engineering

Build autonomous agents with LLM prompting, tool-calling, memory, and LangGraph.

3 sections 9 exercises
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Advanced Prompt Engineering

Zero/few-shot prompting, chain-of-thought, RAG prompting, and defenses against prompt injection.

3 sections 9 exercises
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LLM App Development

Embeddings, vector DBs (FAISS/Pinecone), similarity search, and retrieval-augmented generation pipelines.

3 sections 9 exercises
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Terraform & Infrastructure as Code

HCL, providers, modules, remote backends, workspaces, and CI/CD for Terraform.

3 sections 9 exercises
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Observability (Metrics, Tracing, Logging)

Prometheus metrics, OpenTelemetry tracing, structured logging, and Grafana dashboards.

2 sections 6 exercises
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Advanced Go (Concurrency & Stdlib)

Goroutines, channels, select, sync primitives, testing, and production Go patterns.

2 sections 6 exercises
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Clean Architecture & DDD

Domain-driven design, entities/value objects, bounded contexts, and clean layer separation.

2 sections 6 exercises
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