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Learn how heartbeat signals help detect server failures in distributed systems. Understand why regular status checks are critical for routing requests and maintaining system reliability.
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Understand the difference between Long-Polling, WebSockets, and Server-Sent Events (SSE) for real-time client-server communication. Learn with simple points, examples, and use cases.- Published on
A Primary Index is an automatic, unique index created on a table's primary key for fast data retrieval. It ensures quick lookups, enforces uniqueness, and boosts performance in relational databases.- Published on
Data Backup and Disaster Recovery are essential for safeguarding organizational data and ensuring business continuity. While backups focus on preserving and restoring lost or corrupted data, disaster recovery encompasses broader strategies for restoring entire IT systems after major disruptions.- Published on
Redundancy in systems means having backup components to prevent failures. Learn how it boosts reliability, availability, and disaster recovery in modern IT infrastructure.