PRABHAT KASHYAP’S ENGINEERING NOTES
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Design caching around freshness, invalidation, capacity, and failure. Explore cache-aside, Redis eviction, HTTP caching, stampedes, and safe fallback paths.
Combine values with Cats Semigroup and Monoid. Build a request-summary instance, test its laws, and understand ordering, empty inputs, averages,...
Build resumable large file uploads with S3 multipart, ETags, checksums, and signed URLs. Handle retries, expiry, cancellation, and uncertain completion.
What type classes are, why they help, and how given, using, and context bounds work. Then apply the pattern to...
Understand how pretraining, supervised fine-tuning, and preference optimization shape an LLM, where RLHF fits, and why alignment is more than...
Avoid the PostgreSQL-to-Kafka dual-write gap with a transactional outbox. A practical walkthrough of Debezium CDC, idempotent consumers, ordering, and recovery.
Open source
Tools I build.
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Practical tools and libraries, with the source open to explore.
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Mockery
A mock REST server with YAML configuration, request matching, and a built-in browser editor. Run it from a single downloaded binary.
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Prabhat Kashyap
Senior Technical ArchitectI build and explain backend systems, from Scala and JVM internals to distributed systems and practical AI engineering.
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