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Backend and AWS

From a server that answers requests to a system on AWS that handles queues, failures and audits.

Click a step or a topic to see what to study. The circle marks it done in one click, and progress is saved in this browser.

1. 01
   TypeScript in depth0/5One language learned well is worth more than three half-learned.

   • Types and narrowing›
   • Async and the event loop›
   • Error handling›
   • Testing›
2. 02
   HTTP and APIs0/5The interface between your system and the rest of the world.

   • REST and idempotency›
   • OAuth2, OIDC and JWT›
   • Rate limits and Retry-After›
   • Signed webhooks›
3. 03
   Data0/5Relational databases, transactions and indexes. The rest is a variation.

   • Indexes and query plans›
   • Transactions›
   • Migrations›
   • Caching›
4. 04
   Queues and events0/4Heavy work leaves the request and goes to a queue.

   • SQS, DLQs and visibility timeout›
   • Idempotent consumers›
   • EventBridge and scheduled jobs›
5. 05
   Essential AWS0/5A few services cover most cases.

   • IAM and least privilege›
   • Lambda›
   • S3 and CloudFront›
   • DynamoDB›
6. 06
   Infrastructure as code0/4Infrastructure created by hand disappears when its creator leaves the team.

   • SST›
   • Terraform›
   • CI/CD›
7. 07
   Observability0/4If you can't see an error in production, as far as you know it doesn't exist.

   • Structured logs›
   • Metrics and alerts›
   • Tracing and Sentry›
8. 08
   Security0/4Getting the basics right prevents most incidents.

   • OWASP Top 10›
   • Secrets out of the code›
   • WAF and the edge›