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Wednesday, 30 November 2022
Saturday, 19 November 2022
What are Microservices? (And When Not To Use It) | Microservices Tutorial
🚀 Level Up Your Architecture!
Subscribe to Ram N Java for professional system design tutorials and access to Java source code for every video!
🔔 JOIN THE DEV COMMUNITYMicroservices Explained: Patterns, Pros, and Pitfalls
Microservices architecture is the gold standard for large-scale applications, but it's not always the right choice. By breaking a large app into loosely coupled services, you gain independence and scalability—at the cost of increased complexity. Let's explore how they work and when you should actually stay away from them.
1. How Microservices Work
In this architecture, every major function (like a Shopping Cart, Billing, or User Management) becomes its own mini-application.
• API Gateway: Acts as a single entry point for clients (Mobile/Web). It routes requests to the correct service.
• Dedicated Databases: Each service owns its own data. The Billing service cannot touch the User service's database directly.
• Communication: Services talk to each other using RPC (fast response) or Event Streaming like Kafka (better isolation).
2. The Main Benefits
Team Independence: Large teams can work on different services without stepping on each other's toes.
Fault Containment: If the Shopping Cart service fails, users might still be able to log in and view their profile.
Independent Scaling: You can add more power to the Billing service during a sale without scaling the entire app.
When You Should NOT Use Them
Small Startups: Microservices are expensive to build and operate. For a small team, a Monolith is often faster to develop and easier to maintain.
Data Integrity Needs: Since databases are split, you lose traditional "Foreign Key" relationships. The burden of data integrity moves to your application code.
3. Key Infrastructure Components
To make microservices work, you need extra "plumbing":
• Identity Provider: Handles authentication for all services at once.
• Service Registry: A "phone book" that helps services find each other's dynamic IP addresses.
• Monitoring & Alerting: Essential for tracking health across dozens of services.
💡 PRO TIP: If you're a startup, design your monolith with well-defined interfaces. This makes it much easier to migrate to microservices once your business actually needs the scale!
Watch the full video above for a detailed visual guide and diagrams of these architecture patterns!
Wednesday, 9 November 2022
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