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KMS securely manages encryption keys to protect data from theft.

API keys help identify clients and control their access to APIs securely.

ZooKeeper uses ephemeral and sequential nodes for managing distributed services effectively.

Symmetric encryption uses one key, while asymmetric uses a pair of keys for security.

mTLS allows microservices to verify each other's identities using certificates.

ZooKeeper coordinates distributed systems using an ensemble of servers and the ZAB protocol.

Hashing is one-way for verification, while encryption is two-way for confidentiality.

Session-based authentication uses cookies to remember users after login.

OAuth 2.0 lets apps access user data securely without passwords.

Elasticsearch uses master election and quorum to prevent split brain scenarios.

JWTs allow secure user authentication without needing session storage.

Kafka maintains message order within partitions using keys for routing.

Consistent hashing helps distribute data across servers with minimal movement.

Zero Trust Architecture ensures that no user or device is trusted by default.

Token expiration and refresh token rotation secure user sessions by limiting token lifespan and preventing unauthorized access.

Consistent hashing allows efficient addition and removal of nodes with minimal key movement.