3 min read
Angular signals for everyday admin pages
A practical guide to signal, computed, input, and effect, using a filterable list page as the example.
~/writing
Writing
Notes on .NET, Angular, Spring Boot, and building production systems.
RSS feed10 articles
3 min read
Typed reactive forms in Angular, without the any
Strictly typed FormGroups, non-nullable controls, cross-field validation, and mapping form values to an API request.
3 min read
Consistent API errors in ASP.NET Core with ProblemDetails
One error shape for every failure: validation, not found, and unhandled exceptions, using the RFC 9457 format built into ASP.NET Core.
3 min read
Passing CancellationToken all the way down in ASP.NET Core
Why a cancelled HTTP request should stop its database query too, and the small habits that make it happen.
3 min read
Graceful shutdown for Go HTTP services
Stop accepting new requests, finish the ones in flight, then close the database: a small main.go pattern for containers and deploys.
3 min read
Idempotency keys: making payment APIs safe to retry
Why retries cause double charges, and how an Idempotency-Key header backed by a unique constraint prevents them in Spring Boot.
3 min read
A spam-resistant contact form with Next.js Server Actions
How the contact form on this site works: a Server Action, Zod validation, useActionState, a honeypot, a timing check, and Resend.
3 min read
Offline-friendly forms in React Native: drafts and a submit queue
Field apps lose signal. Saving drafts as the user types and queueing submissions keeps long forms from being lost.
3 min read
Request validation and error handling in Spring Boot 3
Bean Validation on DTOs, one @RestControllerAdvice, and ProblemDetail responses that frontends can rely on.
3 min read
Keyset pagination in SQL Server: when OFFSET gets slow
Why OFFSET/FETCH slows down on deep pages, how keyset (seek) pagination fixes it, and the index that makes it work.