Dapr v1.0 is production-ready. It solves the hardest parts of distributed systems: State management, Service Invocation, and Event-driven messaging. This guide implements the “Virtual Actor” pattern using Dapr actors. Virtual Actors Actors are single-threaded units of state and logic. Dapr handles their lifetime (activating them when a message arrives, deactivating them after timeout). Output Bindings […]
Read more →Category: Emerging Technologies
Emerging technologies include a variety of technologies such as educational technology, information technology, nanotechnology, biotechnology, cognitive science, psychotechnology, robotics, and artificial intelligence.
Azure SQL Hyperscale: 100TB Databases
Traditional Azure SQL Database is limited by the disk size of the underlying VM (4TB max usually). **Hyperscale** decouples compute from storage, allowing databases to grow up to 100TB with rapid scaling. Architecture Why use it? **Instant Backups**: Backups are file-snapshots, taking zero IOPS from the compute. **Fast Restore**: Restoring a 50TB database takes minutes, […]
Read more →Integration Testing with Testcontainers
Mocking the database in tests is a lie. In-memory databases (like EF Core InMemory) behave differently than SQL Server. **Testcontainers** allows you to spin up real, throwaway Docker containers for your integration tests. Setup in xUnit Writing the Test Key Takeaways Test against the exact version of the database you use in production. Works for […]
Read more →React Query: Server State vs Client State
Redux is great for client state (is the modal open?), but terrible for server state (is this data fresh?). React Query (now TanStack Query) manages caching, background updates, and stale data automaticallly. The Default Stale-While-Revalidate Strategy React Query assumes data is stale immediately (0ms) but keeps it in cache for 5 minutes. When you request […]
Read more →C# 9 Source Generators: Removing Reflection
Reflection is slow. It happens at runtime, bypasses type safety, and prevents trimming. Source Generators solve this by generating code at compile time. In this guide, we build a generator that automatically implements a `MapTo` method for DTOs, replacing AutoMapper. The Goal The Generator Logic Key Takeaways Source Generators enable **Zero-Overhead abstractions**. They are essential […]
Read more →Securing SPAs: The Backend for Frontend (BFF) Pattern
Storing Access Tokens (JWT) in LocalStorage is insecure (XSS vulnerability). Storing them in HttpOnly cookies is safer, but SPAs can’t read cookies. The solution? The **Backend for Frontend (BFF)** pattern. The Architecture Using YARP (Yet Another Reverse Proxy) Microsoft’s YARP is the perfect tool to build a .NET BFF. Key Takeaways **Zero Tokens in Browser**: […]
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