Content Addressable Storage
Content Addressable Storage (CAS) is a storage paradigm where data is identified and retrieved based on its content, typically using a cryptographic hash (like SHA-256) as a unique identifier. Instead of using file names or locations, CAS systems store data in an immutable way, ensuring data integrity and deduplication. It is commonly used in distributed systems, version control, and data archiving.
Developers should learn CAS when building systems that require data integrity, deduplication, or immutable storage, such as version control systems (e.g., Git), blockchain applications, or backup solutions. It is essential for scenarios where data must be reliably identified and retrieved without corruption, making it ideal for distributed and decentralized architectures.