Serverless Data Stores: Managing State in Stateless Apps
Serverless Data Stores: Managing State in Stateless Apps In serverless apps, functions come and go. They don’t keep long-term state on their own. To behave well at scale, apps store state outside the code path and access it through stable interfaces. This approach keeps functions lean, predictable, and easy to test. The right data stores also unlock powerful patterns for collaboration, security, and reliability. Choosing the right store starts with your access pattern. For fast, scalable documents or key-value items, consider DynamoDB or Firestore. For ultra-fast reads and sessions, Redis or another in-memory store helps with caching and rate limiting. For large files, backups, or archives, use S3 or another object store. If you need complex queries and relations, a relational database (like Aurora or Cloud SQL) can fit, though you often pair it with a read model. Don’t forget data that grows over time; plan retention, backups, and archiving from the start. ...