A developer's learning log — backend, Go, Web3, product, life.https://walker-learn.xyz/enhttps://walker-learn.xyz/en/posts/7501/https://walker-learn.xyz/en/posts/7501/Learning Objectives Understand the evolution and core differences of Web1, Web2, and Web3 Grasp the core concepts of Web3: decentralization, data owneTue, 10 Mar 2026 03:00:00 GMThttps://walker-learn.xyz/en/posts/7500/https://walker-learn.xyz/en/posts/7500/Learning Objectives Master Solidity's inheritance mechanism and polymorphism Understand the C3 linearization algorithm Master the definition and usageTue, 10 Mar 2026 02:00:00 GMThttps://walker-learn.xyz/en/posts/7498/https://walker-learn.xyz/en/posts/7498/Learning Objectives Understand how delegatecall works Master Storage Layout rules Master Proxy Pattern and contract upgrades Understand Unstructured STue, 10 Mar 2026 01:00:00 GMThttps://walker-learn.xyz/en/posts/7496/https://walker-learn.xyz/en/posts/7496/Learning Objectives Understand the economic model and incentive mechanism of blockchain Master the concepts and relationships of Gas, Gas Price, and GTue, 10 Mar 2026 00:00:00 GMThttps://walker-learn.xyz/en/posts/7494/https://walker-learn.xyz/en/posts/7494/Learning Objectives Master the syntax and use cases of call dynamic calls Understand the calldata data structure (selector + parameter encoding) MasteMon, 09 Mar 2026 23:00:00 GMThttps://walker-learn.xyz/en/posts/7492/https://walker-learn.xyz/en/posts/7492/Learning Objectives Master the methods of inter contract calls, interface definition, ABI data structure, and Web3.js methods for accessing contracts.Mon, 09 Mar 2026 22:00:00 GMThttps://walker-learn.xyz/en/posts/7491/https://walker-learn.xyz/en/posts/7491/Learning Objectives Master Solidity function definition, visibility modifiers, transaction properties, modifiers, and constructors. Function DefinitioMon, 09 Mar 2026 21:00:00 GMThttps://walker-learn.xyz/en/posts/7490/https://walker-learn.xyz/en/posts/7490/Learning Objectives Understand the characteristics of the three data storage locations in the EVM, and the copy rules for assigning reference types beMon, 09 Mar 2026 20:00:00 GMThttps://walker-learn.xyz/en/posts/7489/https://walker-learn.xyz/en/posts/7489/Learning Objectives Master the definition and usage of the four reference types in Solidity: arrays, structs, mappings, and strings/variable length byMon, 09 Mar 2026 19:00:00 GMThttps://walker-learn.xyz/en/posts/7488/https://walker-learn.xyz/en/posts/7488/Learning Objectives Master Solidity's value types such as integers, booleans, addresses, fixed size byte arrays, and enums Understand the impact of EVMon, 09 Mar 2026 18:00:00 GMThttps://walker-learn.xyz/en/posts/7486/https://walker-learn.xyz/en/posts/7486/Learning Objectives Understand the essence and core characteristics of smart contracts Master the operating principles of contracts on Ethereum (TransMon, 09 Mar 2026 17:00:00 GMThttps://walker-learn.xyz/en/posts/7479/https://walker-learn.xyz/en/posts/7479/Learning Objectives Understand the underlying core technologies of blockchain: Hash Function, Merkle Tree, Digital Signature, Encryption Technology MaMon, 09 Mar 2026 16:00:00 GMThttps://walker-learn.xyz/en/posts/6726/https://walker-learn.xyz/en/posts/6726/E book Source Directory: /Users/walker/Downloads/www.zxit8.com 017—电子书/ Total 48 resources (47 numbered PDFs + 1 independently named Go in Action + 1Sat, 07 Mar 2026 12:00:00 GMThttps://walker-learn.xyz/en/posts/6767/https://walker-learn.xyz/en/posts/6767/1\. Measure Before Optimizing "Premature optimization is the root of all evil." — Donald Knuth Optimization process: 1. Write correct code first 2. UsSat, 07 Mar 2026 11:00:00 GMThttps://walker-learn.xyz/en/posts/6766/https://walker-learn.xyz/en/posts/6766/1\. Memory Allocation Basics 1.1 Stack and Heap Stack allocation : Extremely fast (only needs to move the stack pointer), automatically reclaimed whenSat, 07 Mar 2026 10:00:00 GMThttps://walker-learn.xyz/en/posts/6765/https://walker-learn.xyz/en/posts/6765/Corresponds to the resource directory "Chapter 2: Getting Started with Jenkins" and "Chapter 3: Deploying Services with Jenkins", this article organizSat, 07 Mar 2026 09:00:00 GMThttps://walker-learn.xyz/en/posts/6764/https://walker-learn.xyz/en/posts/6764/Based on the key video points from Chapter 3 (3 1 ~ 3 9) of the courseware, this guide compiles a service protection guide for beginners, helping to uSat, 07 Mar 2026 08:00:00 GMThttps://walker-learn.xyz/en/posts/6763/https://walker-learn.xyz/en/posts/6763/I. Kubernetes Core Concepts 1.1 What is Kubernetes Kubernetes (K8s for short) is Google's open source container orchestration platform used for automaSat, 07 Mar 2026 07:00:00 GMThttps://walker-learn.xyz/en/posts/6762/https://walker-learn.xyz/en/posts/6762/I. Docker Core Concepts 1.1 What is Docker Docker is an open source containerization platform that packages applications and all their dependencies inSat, 07 Mar 2026 06:00:00 GMThttps://walker-learn.xyz/en/posts/6761/https://walker-learn.xyz/en/posts/6761/Refer to our various configurations (podman) for installation instructions. Concept Introduction RocketMQ is a distributed messaging middleware open sSat, 07 Mar 2026 05:00:00 GMThttps://walker-learn.xyz/en/posts/6760/https://walker-learn.xyz/en/posts/6760/Both pre deduction and post deduction of inventory will affect inventory and orders, so distributed transactions must be used. Business (unpaid order)Sat, 07 Mar 2026 04:00:00 GMThttps://walker-learn.xyz/en/posts/6759/https://walker-learn.xyz/en/posts/6759/1\. Client Library Selection 1.1 Mainstream Go ES Clients olivere/elastic : Most comprehensive features, elegant API design, supports ES 7.x/8.x elastSat, 07 Mar 2026 03:00:00 GMThttps://walker-learn.xyz/en/posts/6758/https://walker-learn.xyz/en/posts/6758/1\. What is an Inverted Index? An Inverted Index is a data structure used to quickly find documents containing specific terms. It is one of the core tSat, 07 Mar 2026 02:00:00 GMThttps://walker-learn.xyz/en/posts/6757/https://walker-learn.xyz/en/posts/6757/elasticsearch(理解为库) kibana(理解为连接工具) es 和 kibana（5601） 的版本要保持一致 MySQL 对照学习 Elasticsearch（ES） 术语对照 MySQL Elasticsearch database index（索引） table type（7.xSat, 07 Mar 2026 01:00:00 GMThttps://walker-learn.xyz/en/posts/6756/https://walker-learn.xyz/en/posts/6756/User Center Favorites Manage Shipping Addresses (CRUD) Messages Copy inventory srv \ userop srv query and replace all inventory Elasticsearch In depthSat, 07 Mar 2026 00:00:00 GMThttps://walker-learn.xyz/en/posts/6755/https://walker-learn.xyz/en/posts/6755/First, copy the service code framework of srv from the inventory service and find and replace the corresponding name ( order srv ) Fundamentals of EncFri, 06 Mar 2026 23:00:00 GMThttps://walker-learn.xyz/en/posts/6754/https://walker-learn.xyz/en/posts/6754/Entity Structure Description This module includes the following core entities: Goods Category Brands Banner GoodsCategoryBrand 1\. Goods Describes theFri, 06 Mar 2026 22:00:00 GMThttps://walker-learn.xyz/en/posts/6753/https://walker-learn.xyz/en/posts/6753/user web is the user service Web layer module in the joyshop api project, responsible for handling user related HTTP requests, parameter validation, bFri, 06 Mar 2026 21:00:00 GMThttps://walker-learn.xyz/en/posts/6751/https://walker-learn.xyz/en/posts/6751/Create a microservice project. All project microservices will reside within this project. Create joyshop srv . Since we are not creating a user loginFri, 06 Mar 2026 20:00:00 GMThttps://walker-learn.xyz/en/posts/6743/https://walker-learn.xyz/en/posts/6743/Backend Management System Product Management Product List Product Categories Brand Management Brand Categories Order Management Order List User InformFri, 06 Mar 2026 19:00:00 GMT