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pain - created

phong2018 (phong2018@undisclosed.example.com) — 2026-06-19T08:42:02+00:00

Script cụ thể để bước vào tiệm lạ: Đừng giới thiệu mình là dev hay đang build app. Chỉ cần nói tự nhiên: “Chị ơi, em đang tìm hiểu về mấy tiệm tạp hoá, chị cho em hỏi thăm chút được không? Chị đang ghi sổ nợ khách bằng gì vậy? Có hay bị quên hay nhầm không?

learning-new-technologies

phong2018 (phong2018@undisclosed.example.com) — 2026-06-18T00:36:55+00:00

When learning any tech (Kafka, Redis, TCP, etc.): 1. Start with WHY (Purpose / Motivation: most important first): Why does this exist? 2. Then WHAT (Concept / Definition: structure, components): What is it? 3. Then HOW (Implementation / Usage: flow, example, code)

start - [OSI Model]

phong2018 (phong2018@undisclosed.example.com) — 2026-06-18T00:21:57+00:00

Engineering Knowledge Tree This is a structured engineering knowledge map with readable links. ---------- 1. Computer Science Fundamentals Data Structures * Array * Linked List * Stack * Queue * Hash Map / Hash Set * Tree * Graph Algorithms * Sorting Algorithms * Searching Algorithms * Recursion * Dynamic Programming * Graph Algorithms (BFS, DFS, Dijkstra) Complexity *

offset - created

phong2018 (phong2018@undisclosed.example.com) — 2026-06-18T00:10:25+00:00

Kafka Offset Theory An offset is a sequential number that identifies the position of a message inside a partition. Important: * One partition contains many messages. * One message has exactly one offset. * Offsets are unique only within a partition.

network

phong2018 (phong2018@undisclosed.example.com) — 2026-06-17T13:29:34+00:00

Network & Messaging Cheat Sheet Network Models OSI Model TCP/IP Model Purpose Layer 7: Application Application Application protocols Layer 6: Presentation Application Serialization, encryption Layer 5: Session Application Session management

kind-in-kubenetes.png - created

phong2018 (phong2018@undisclosed.example.com) — 2026-05-31T04:06:21+00:00