APIs · Beginner · Live online
Input Validation Beyond Regex
Schema-first validation, coercion traps, and multilingual payloads.
Validation is product design. We slow down to discuss messages users see when payloads drift.
Duration: 3 weeks
Tuition (informational): 3,600,000 VND
Final quotes come from admissions. See Money-Back Policy for eligibility.
What ships in the syllabus
- Zod refinements for business rules
- Unicode normalization gotchas
- Pagination guardrails
- File upload limits without framework magic
- Error message tone guide
- Property-based testing teaser
- Peer review of validation PRs
Outcomes we actually assess
- Ship a schema module covering one complex DTO
- Document three coercion traps your API avoids
- Run property tests on a money-related field
Thu Nguyen
Auth specialist covering OAuth2, refresh rotation, and threat modeling.
FAQ — including what we skip
joi vs zod?
Zod for consistency; conceptual map to joi provided.
GraphQL?
Not covered—HTTP JSON bodies only.
Limitation?
No rich text HTML sanitization deep dive.
Experience notes
“Unicode normalization example broke our old nickname field assumptions.”