Scalability is the ability of a system, application, or infrastructure to handle increasing amounts of workload, traffic, or data efficiently without losing performance or stability. A scalable system can grow and adapt as user demand increases.
In software architecture and cloud computing, scalability is important for ensuring that applications continue to perform well as the number of users, requests, or stored data grows over time.
For example:
- An e-commerce website adds more servers during a major sale to handle traffic spikes.
- A social media platform scales its infrastructure as millions of new users join.
- A cloud application automatically increases computing resources when demand rises.
- A database system distributes data across multiple servers for better performance.
Common technologies and concepts related to scalability include:
- Horizontal Scaling
- Vertical Scaling
- Load Balancers
- Cloud Computing
- Distributed Systems
- Microservices Architecture
- Auto Scaling
- Database Sharding
- High Availability (HA)
