The original title is "I Built an Interactive Kafka Playground (Partitions, Keys, Consumer Groups, Offsets)"

Short summary

Developer built an interactive Kafka playground visualizing partitions, consumer groups, offsets, and idle consumers. Shows why messages with the same key always hash to the same partition and why consumer count is capped by partition count. Single HTML file, no dependencies, live demo on GitHub.

• •Interactive tool teaches Kafka fundamentals: partitions, keys, consumer groups, and offsets
• •Demonstrates ordering guarantees within partitions and consumption scaling mechanics
• •Lightweight implementation: single HTML file, zero dependencies, live demo available

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