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Building a Pub/Sub System in .NET: MassTransit, Reactive Extensions, and BlockingCollection

Modern applications often need to broadcast events across multiple services.Think of an order being placed in an e-commerce system. The order service publishes an event, and multiple subscribers react independently: the billing service charges the customer, the email service sends a receipt, the analytics service tracks the order. This is the essence of the Publish/Subscribe…

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Introduction to GraphQL: Basics and Examples

GraphQL is a powerful query language for APIs and a runtime for executing those queries. Developed by Facebook, GraphQL provides a more flexible and efficient way to interact with data compared to traditional REST APIs. Here’s a beginner-friendly overview with examples. What is GraphQL? GraphQL is a query language that allows clients to specify exactly…

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