Here is some knowledge about low-level system design

Here is some backbone Knowledge Base - Patterns - Technologies - Core concepts for System Design Interview.

Here is some data structure in Redis

Here is some data structure in Redis

Here is main idea of concurency in Golang.

Here is main idea of concurency in Golang.

Here is some problems for Big Tech - System Design Products

Here is template for answering System Design Interview.

Here are some concepts to answer Computer Science Foundation Interview.

In the era, where concurrency and high-throughput traffic applications are trend, multiple high-performance language: Java, Golang is out-perform choices due to it handle multi-threads better, Facebook still used PHP as main backend language, so why ?

Every language can be used to develop APIs for web applicaiton.

Here is some main concepts of Zalopay.

1. Application

1. Database (SQL, NoSQL)

Here is the OS + network + application communication when make a request by typing “google.com”

Here is implements low-level for designing Strava.

1. Requirements

Here is implements low-level for rate limiting.

Here is some notes for interview with Java Core, Java Spring.

Here is some notes for components of System Design.

Here is some notes for properties of System Design.

1. Principle Design

Here is some note for product system design.

Here is a some notes to deep dive in Java Spring

[Scalability] Làm sao để tối ưu hệ thống khi có 1 triệu user truy cập cùng 1 lúc ?

Rate limiting is a crucial design pattern used in distributed systems to control the rate of incoming requests or traffic to a service. It helps protect services from being overwhelmed, ensures fair resource usage, and maintains system stability.

In gRPC, streaming is used when a simple request-response pattern (like in typical HTTP APIs) isn’t sufficient—usually due to performance, real-time data needs, or the nature of the communication. gRPC supports four types of communication:

[Event-Driven Architecture] Làm thế nào EDA giúp hệ thống scale và xử lý bất đồng bộ hiệu quả ?

Here is 4 types of isolation level MySQL when handle concurrency processing in database.