Building Scalable Web Applications

Building scalable web applications requires careful planning and the right architectural decisions. In this post, we'll explore the best practices and patterns that help create maintainable and scalable applications.

Understanding Scalability

Scalability in web applications refers to the ability to handle growing amounts of work in a capable manner or its ability to be enlarged to accommodate that growth.

// Example of a scalable API endpoint
const cache = new Map();

async function getUser(id: string) {
  // Check cache first
  if (cache.has(id)) {
    return cache.get(id);
  }

  // Fetch from database
  const user = await db.users.findUnique({
    where: { id }
  });

  // Store in cache
  cache.set(id, user);
  return user;
}