Designing systems similar to Kafka or RocketMQ.
For payment systems, the book emphasizes . In your interview, explain how an idempotency-key prevents a user from being charged twice during a network timeout. 3. Data Streaming Designing systems similar to Kafka or RocketMQ
In the narrow, sun-drenched lanes of Old Delhi, 68-year-old Shanti ran a tiny stall — not selling food or clothes, but something far rarer: handwritten letters. For forty years, she sat cross-legged on a faded jute mat, a fountain pen in her weathered hand, composing love notes, apologies, and blessings for illiterate vendors, anxious brides, and homesick migrants. sun-drenched lanes of Old Delhi
covers broad fundamentals and case studies similar to those in Volume 2. Book Notes and Summaries composing love notes