Attention commands

Indexes are one of the tools MySQL uses to make data access faster. Without them, the database engine has to scan every row in a table to find matching records. This kind of full scan can be slow, especially when dealing with large datasets. Indexes allow MySQL to skip most of the table and go straight to the rows it needs. They're not just about speed, though. Indexes also help with enforcing uniqueness, sorting results, and supporting specific types of queries. But they come with trade-offs, like extra storage use and slower write operations.

Nginx is a powerful and lightweight web server that's commonly used to serve websites and static content. If you're running several websites on a single machine, configuring Nginx to manage them properly is efficient and straightforward. This article walks you through installing Nginx, setting up multiple sites, configuring firewall access, and organizing your folders and logs in a clean and practical way.

Hexagonal architecture, also called ports and adapters, is a software design approach that helps structure an application by clearly separating the core logic from technical details and external systems. Instead of shaping your app around frameworks, protocols, or storage, you keep your focus on what the application does, and let everything else connect to it through interfaces. The pattern isn't tied to any specific language. The examples in this article are written in PHP to show how the idea can be applied, but the approach works the same way in any backend system.

CQRS stands for Command Query Responsibility Segregation. It's a pattern that separates how an application reads data from how it writes data. This approach can help structure code more clearly, especially in systems that deal with complex business logic or need to scale certain operations differently.

Working with cache can drastically improve the performance of an application, especially when dealing with data that doesn't change too often. While Laravel provides solid support for caching through multiple drivers, it doesn't offer native support for cache tags. To work around this limitation, we'll integrate Symfony's Cache component, which brings tag support and fits well into the repository pattern we've already established. In this article, we'll build on the existing structure and focus on using cache tags to group and clear related data more efficiently.