Articles by Vivek Kumar

Learn how to configure Npgsql connection pooling in .NET, size pools across application instances, and prevent PostgreSQL connection exhaustion in production.

Learn how to build a TypeScript command-line tool with Deno and compile it into a standalone executable, including argument handling, validation, and runtime permissions.

Learn how to use TypeScript project references to organize monorepo packages, build dependencies in order, and speed up incremental builds.

Learn how Terraform plan and apply differ, how to review proposed infrastructure changes, and how to use saved plans safely in development and production.

Learn how to build offline-first web apps with service workers, Cache Storage, and IndexedDB to preserve user changes and synchronize pending updates when connectivity returns.

Learn to build a reusable JavaScript library with Vite, configure ES module and CommonJS output, set package metadata, and prepare the package for npm publishing.

Learn how to detect exposed secrets in Git files and commit history, automate secret scanning in CI/CD, and respond safely to leaked credentials.

Learn how to detect application performance regressions with repeatable baselines, controlled workloads, latency percentiles, throughput measurements, and profiling tools.

Learn how high-cardinality OpenTelemetry attributes increase metric, trace, and log costs, and how to identify and reduce unnecessary dimensions without losing diagnostic value.

Learn how to implement graceful shutdown for ASP.NET Core background services using cancellation tokens, safe work handling, dependency injection scopes, and recovery strategies.

Learn how to distinguish normal memory growth from leaks in ASP.NET Core, monitor runtime metrics, collect memory dumps, and identify retained objects in production.

Learn how to safely evaluate experimental WinUI controls using feature flags, isolated XAML, UI automation, accessibility checks, and environment-based testing.

Learn how to configure GitHub Actions merge queues with the merge_group event, keep required checks reliable, and avoid rerunning expensive tests unnecessarily.

Learn why average API latency can hide slow requests and how p50, p95, and p99 percentiles help monitor and troubleshoot response-time performance.

Learn how to find website accessibility problems before release using Lighthouse, browser tools, automated scans, Playwright, keyboard testing, and practical WCAG checks.

Configure and automatically test ASP.NET Core API rate limits, HTTP 429 responses, Retry-After headers, client partitions, and retry behavior with xUnit.

Learn how to prevent duplicate ASP.NET Core API operations with idempotency keys, request validation, stored responses, and SQL Server persistence.

Learn how to cache NuGet packages in GitHub Actions for .NET projects using actions/cache, effective cache keys, and restore keys to speed up CI builds.

Learn how to identify and fix N+1 query problems in GraphQL APIs using query logging, batching, DataLoader, and Entity Framework Core.

Learn how to use uv and uv.lock to lock Python dependencies, create repeatable environments, and install exact dependency versions in GitHub Actions.

Learn how to mock external HTTP APIs in .NET integration tests with a custom HttpMessageHandler, including success, error, and not-found response scenarios.

Learn how to cache NuGet packages in GitHub Actions using setup-dotnet or actions/cache, choose dependency files for cache keys, and troubleshoot restore cache misses.