React Testing Library encourages testing behavior, not implementation. Here’s how to write effective React tests. Setup Basic Test Async Testing Guidelines Query by role, label, or text – not test IDs Test user behavior, not implementation Avoid testing internal state References React Testing Library
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SQL Server 2019: What’s New for Developers
SQL Server 2019 brings big data clusters, improved query processing, and better Linux support. Here are the highlights for developers. Intelligent Query Processing Batch mode on rowstore: Faster analytical queries Memory grant feedback: Automatic memory adjustments Table variable deferred compilation: Better estimates New T-SQL Features Accelerated Database Recovery Near-instant recovery regardless of transaction log size. […]
Read more →Vue.js 2.6: Scoped Slots and New Features
Vue 2.6 introduced a cleaner slot syntax and the v-slot directive. Here’s what changed. New v-slot Syntax Dynamic Slot Names Other Changes Improved error messages Async error handling Better TypeScript support References Vue 2.6 Release
Read more →React Error Boundaries: Graceful Error Handling
Error boundaries catch JavaScript errors in component trees and display fallback UI instead of crashing your whole app. Creating an Error Boundary Usage Limitations Only class components can be error boundaries Don’t catch errors in event handlers (use try/catch) Don’t catch errors in async code Don’t catch errors in SSR
Read more →gRPC in .NET Core 3.0: High-Performance RPC
gRPC is now a first-class citizen in .NET Core 3.0. It’s faster than REST for internal service communication. Here’s how to get started. Define the Service Implement the Service Client When to Use gRPC Service-to-service communication Streaming scenarios Performance-critical paths References gRPC in ASP.NET Core
Read more →Azure Cosmos DB Change Feed: Real-Time Data Processing
Cosmos DB Change Feed lets you react to data changes in real-time. It’s perfect for materializing views, triggering workflows, or syncing to other systems. What is Change Feed? A persistent, ordered log of changes to your container. Sorted by modification time within each partition. With Azure Functions Use Cases Real-time analytics aggregation Syncing to search […]
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