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SSGeek Technical Blog and Documentation

website·Indexed 31 days ago

https://www.ssgeek.com

A collection of technical guides and articles covering DevOps, cloud-native technologies, and software development. Topics include Kubernetes (K8s), Docker, Jenkins, Prometheus, Grafana, Istio, SkyWalking, MySQL, Python, Django, Go, and frontend engineering tools such as npm and API codegen.

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What's inside SSGeek

  1. Overview of MyCat Distributed Database Middleware

    MyCat is an open-source distributed database middleware that implements the MySQL protocol. It acts as a database proxy for the frontend (accessible via MySQL client tools and command line) and communicates with multiple backend MySQL servers using the MySQL native protocol or JDBC. Its primary function is sharding (splitting a large table horizontally into N smaller tables) across multiple backend database servers.

  2. Overview of protoc-gen-ts_proto

    protoc-gen-ts_proto is a tool used to generate TypeScript type definitions from Protocol Buffers definition files. It is particularly useful when the backend provides services via gRPC. Key features include a 1:1 mapping between .proto files and TypeScript files, precise type support for Protocol Buffers features, performance-optimized code, and automatic dependency handling via imports.

  3. Overview of Python requests library project structure

    The requests library is organized into several modules, each handling a specific part of the HTTP lifecycle. Key modules include:

    • api: Provides the primary user-facing interface (e.g., requests.get()).
    • sessions: Manages session state, connection pooling, and request dispatching.
    • models: Contains data structures for Request, PreparedRequest, and Response objects.
    • adapters: Handles the actual transport of HTTP connections, primarily adapting the urllib3 library.
    • auth: Handles HTTP authentication.
    • cookies: Manages cookie processing.
    • certs: Handles HTTPS certificate processing.
    • compat: Provides Python version compatibility layers.
    • status_codes: Defines HTTP status codes.
    • utils: General utility functions.

  5. Overview of Asymmetric Encryption Principles

    Asymmetric encryption (public-key cryptography) differs from symmetric encryption by using a pair of related keys: a public key and a private key.

    Key characteristics:

    • Public Key: Used for encryption; can be shared openly with anyone.
    • Private Key: Used for decryption; must be kept secret by the owner.
    • Performance: Computationally slower than symmetric encryption.
    • Workflow: Plaintext + Public Key $\rightarrow$ Ciphertext; Ciphertext + Private Key $\rightarrow$ Plaintext.
    • Primary Uses: Data encryption and identity authentication.

  6. Overview of MySQL Multi-Instance Deployment

    MySQL multi-instance deployment involves running multiple MySQL service processes on a single machine. Each instance listens on a unique service port (e.g., 3306, 3307) and uses a distinct socket file.

    Key Benefits:

    • Efficiently utilizes remaining server resources.
    • Reduces the number of physical servers required.

    Key Trade-offs:

    • Resource Contention: High concurrency or slow queries in one instance can consume CPU, memory, and Disk I/O, degrading the performance of other instances on the same host.

    Critical Requirements for Coexistence: To run multiple instances, the following must be unique for each instance:

    • Configuration file path
    • Data directory
    • Startup script name
    • TCP port
    • Socket file path

  7. Overview of swagger-typescript-api

    swagger-typescript-api is a tool designed for TypeScript that generates type definitions and API client code from Swagger/OpenAPI documents. It natively supports Swagger 2.0 and allows for modular file generation based on OpenAPI tags, making it suitable for projects requiring lightweight type definitions and organized API encapsulations.

  8. Overview of SSL and TLS Encryption Protocols

    SSL (Secure Sockets Layer) and TLS (Transport Layer Security) are encryption protocols designed to protect internet communications. They ensure data privacy and security by encrypting data during transmission, preventing eavesdropping or tampering. These protocols are widely implemented across various network services, including email, instant messaging, and Virtual Private Networks (VPNs).

  9. Overview of TailwindCSS

    TailwindCSS is a utility-first CSS framework designed to simplify and accelerate frontend development by providing a set of predefined utility classes. Unlike traditional CSS frameworks such as Bootstrap or Foundation, TailwindCSS does not provide pre-designed components; instead, it focuses on providing low-level styling tools that allow developers to build custom designs according to their specific needs.

  10. Overview of Terway CNI Plugin

    Terway is an open-source Container Network Interface (CNI) plugin by Alibaba Cloud based on VPC. It assigns native Elastic Network Interface (ENI) IP addresses directly to Pods, flattening the network between Pods and Nodes. This eliminates the need for tunnel encapsulation (like VxLAN), resulting in higher communication performance. It supports standard Kubernetes Network Policies and is compatible with Calico.

  11. Overview of Python language features and advantages

    Python is a high-level, interpreted programming language known for its concise, English-like syntax, making it accessible for beginners and efficient for rapid prototyping. Key technical advantages include:

    • Dynamic Typing: Variable types are inferred at runtime, removing the need for explicit type declarations.
    • Interpreted Nature: Code can be executed directly without a separate compilation step.
    • Cross-Platform Support: Compatible with Windows, macOS, and Linux.
    • Extensive Ecosystem: A vast array of third-party libraries and frameworks across various domains.

  12. Overview of Vue.js core features and architecture

    Vue.js is a progressive JavaScript framework for building user interfaces, designed to be adopted incrementally. Its core library focuses exclusively on the view layer, making it easy to learn and integrate with existing projects or third-party libraries. Key technical features include:

    • Two-way data binding
    • Component-based architecture
    • Virtual DOM
    • Reactive system
    • Lightweight footprint
    • Extensive ecosystem