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⚡ One HLD concept. 60 seconds. Interview ready
Understanding Raft Log Replication: matchIndex vs commitIndex
matchIndex tracks what each follower has, while commitIndex shows what is committed.
⚡ One HLD concept. 60 seconds. Interview ready
Elasticsearch Split Brain: Master Election and Quorum Explained
Elasticsearch uses master election and quorum to prevent split brain scenarios.
⚡ One HLD concept. 60 seconds. Interview ready
Kafka Async Commit Ordering: Can Older Offsets Overwrite Newer Ones?
Older offsets can overwrite newer ones in Kafka if not handled properly.
⚡ One HLD concept. 60 seconds. Interview ready
Kafka Commit Strategies: Auto vs Manual Commit Explained
Kafka commit strategies determine how offsets are managed during message processing.
⚡ One HLD concept. 60 seconds. Interview ready
Kafka Consumer Offsets: Auto Commit vs Manual Commit
Kafka consumer offsets help track message processing to avoid loss and duplication.
⚡ One HLD concept. 60 seconds. Interview ready
Kafka Retention vs Compaction: History or Latest State?
Kafka uses retention to keep historical data and compaction to keep the latest state.
⚡ One HLD concept. 60 seconds. Interview ready
Understanding ZooKeeper Ephemeral and Sequential Nodes
ZooKeeper uses ephemeral and sequential nodes for managing distributed services effectively.
⚡ One HLD concept. 60 seconds. Interview ready
Kafka Ordering and Keys: Ensuring Message Order
Kafka maintains message order within partitions using keys for routing.
⚡ One HLD concept. 60 seconds. Interview ready
Kafka subscribe() vs assign(): Who Controls Partition Assignment?
Kafka's subscribe() lets the group manage partitions, while assign() gives control to the application.