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Looking for a Grokking System Design alternative? The creator of Grokking explains what changed in senior interviews and why Volume II is the advanced next step.

A DynamoDB hot partition throttles your requests while the table still has spare capacity. Here are the per-partition limits, how to spot one, and six fixes.

LeetCode 75 is LeetCode's free study plan: 75 problems in 22 topic groups, 22 Easy and 53 Medium, with zero Hard. Every problem mapped to the pattern that solves it.

Design an AI agent in seven layers: interface, orchestrator, LLM layer, tools, memory, guardrails, and observability. Most candidates stop at layer three, and the round is decided by six and seven.

The ten API protocols worth knowing: REST, GraphQL, gRPC, WebSockets, SSE, webhooks, AMQP and MQTT, plus MCP, A2A and WebRTC for AI agents.

TCS grades explained: C1Y to SP1 mapped to Systems Engineer, IT Analyst, Assistant Consultant and Consultant, with reported experience and pay in LPA.