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Raymond Ops
Raymond Ops
May 31, 2025 · Operations

Master Docker Container Management: Run, Stop, Resource Limits & Best Practices

This guide walks through Docker container fundamentals, covering how to run containers with CMD or ENTRYPOINT, keep them alive, attach or exec into them, stop/start/restart, pause/unpause, remove, apply memory, CPU and block I/O limits, and explains the underlying cgroup and namespace technologies that enforce isolation and resource control.

Container ManagementDevOpsDocker
0 likes · 18 min read
Master Docker Container Management: Run, Stop, Resource Limits & Best Practices
Code Mala Tang
Code Mala Tang
Jan 7, 2025 · Fundamentals

Master Python Imports: Choose import, from, or * and Avoid Common Pitfalls

This guide explains the differences between Python's import statements—including "import X", "from X import Y", and "from X import *"—covers dynamic imports with __import__, sys.path handling, PYTHONPATH, PEP8 import ordering, __all__ usage, and the role of __name__ in module execution, helping you write cleaner, conflict‑free code.

ModulesPythondynamic-import
0 likes · 10 min read
Master Python Imports: Choose import, from, or * and Avoid Common Pitfalls
IT Services Circle
IT Services Circle
Jul 8, 2024 · Cloud Native

Understanding Cloud Native: A Historical and Technical Overview of Container Technology

This article introduces the "You Call This Thing Cloud Native" series by tracing the evolution of container technology—from early virtual machines and Linux namespaces to Docker’s image system—explaining why containers surged in popularity around 2013 and what fundamentals readers should grasp.

DockerTechnology HistoryVirtualization
0 likes · 7 min read
Understanding Cloud Native: A Historical and Technical Overview of Container Technology
Mike Chen's Internet Architecture
Mike Chen's Internet Architecture
Apr 19, 2024 · Cloud Native

Understanding Docker: Architecture, Core Components, and Underlying Mechanisms

This article explains Docker’s core architecture—including images, containers, and registries—and details how Linux namespaces, cgroups, and UnionFS work together to provide resource isolation, limitation, and lightweight virtualization, while also offering promotional links to extensive architecture and interview collections.

DockerUnionFScgroup
0 likes · 6 min read
Understanding Docker: Architecture, Core Components, and Underlying Mechanisms
Practical DevOps Architecture
Practical DevOps Architecture
Aug 11, 2023 · Cloud Native

Kubernetes Namespace Introduction and Practical Resource Operations

This guide explains Kubernetes namespaces, their purpose for multi‑tenant resource isolation, describes the four default namespaces, and provides step‑by‑step commands to list, create, format, and delete namespaces using kubectl.

Kubernetescloud-nativekubectl
0 likes · 3 min read
Kubernetes Namespace Introduction and Practical Resource Operations
Top Architect
Top Architect
Nov 28, 2022 · Cloud Native

Docker Container Networking: Modes, Configuration, and Practical Commands

This article explains Docker's built‑in container networking, describing the three default networks, the four network modes (bridge, container, host, none), how to inspect and configure them with commands, use veth pairs and network namespaces, and perform common container operations such as port mapping and custom bridge creation.

ContainerDockerbridge
0 likes · 27 min read
Docker Container Networking: Modes, Configuration, and Practical Commands
Baidu Geek Talk
Baidu Geek Talk
Sep 29, 2022 · Databases

Design and Challenges of TafDB: A Scalable Metadata Storage Engine for Cloud Data Lakes

TafDB, Baidu’s Spanner‑like distributed transaction database built on RocksDB and Multi‑Raft, provides a virtually unlimited metadata layer for cloud data lakes by unifying hierarchical and flat namespaces, minimizing cross‑shard transaction overhead, handling garbage collection, and employing a distributed clock, thus delivering trillion‑scale metadata capacity and tens of millions of QPS with low latency.

Distributed DatabaseTafDBcloud storage
0 likes · 21 min read
Design and Challenges of TafDB: A Scalable Metadata Storage Engine for Cloud Data Lakes
Bilibili Tech
Bilibili Tech
Jun 17, 2022 · Information Security

Container Escape Techniques, Exploits, and Mitigation Strategies

The article explains how attackers can break out of Docker containers by exploiting misconfigurations, vulnerable Docker components, kernel bugs, or Kubernetes RBAC errors, illustrates real‑world exploits such as host‑proc mounts and CVE‑2019‑5736, and provides mitigation steps like limiting privileges, updating software, and securing configurations.

Container SecurityDockerKubernetes
0 likes · 15 min read
Container Escape Techniques, Exploits, and Mitigation Strategies
Cloud Native Technology Community
Cloud Native Technology Community
Dec 2, 2021 · Cloud Native

Understanding cgroup and namespace in Linux for Cloud‑Native Containers

This article explains the role of Linux cgroup and namespace technologies in providing resource isolation and security for containers, traces their historical development from early chroot mechanisms to modern Docker and Kubernetes, and details cgroup architecture, core files, migration, delegation, and practical usage examples.

ContainerDockercgroup
0 likes · 17 min read
Understanding cgroup and namespace in Linux for Cloud‑Native Containers
Tencent Cloud Developer
Tencent Cloud Developer
Sep 6, 2021 · Cloud Native

From Docker to Kubernetes: A Comprehensive Guide to Containerization Technology

This guide introduces beginners to containerization by explaining Docker’s core components, Linux kernel mechanisms, and networking, then progresses to Kubernetes, detailing its architecture, key objects such as Pods, Deployments, Services, and storage concepts, and how they orchestrate distributed container workloads.

Container OrchestrationContainerizationDocker
0 likes · 28 min read
From Docker to Kubernetes: A Comprehensive Guide to Containerization Technology
php中文网 Courses
php中文网 Courses
Apr 7, 2021 · Backend Development

Using Namespaces, Aliases, Traits, and Closures in PHP

This article demonstrates how to use PHP namespaces with the `use` keyword, create aliases for classes, functions, and constants, incorporate traits, and capture variables in anonymous functions, providing clear code examples for each concept.

aliasclosurenamespace
0 likes · 2 min read
Using Namespaces, Aliases, Traits, and Closures in PHP
Beike Product & Technology
Beike Product & Technology
Mar 5, 2021 · Backend Development

Automatic Detection of PHP Namespace and Class Constant Issues in Laravel Projects

This article describes a Laravel‑based static analysis tool that automatically scans PHP files to detect missing namespace imports, unresolved class references, and undefined class constants, using regex and token_get_all, and integrates the checks into GitLab CI for early error prevention.

GitLab CILaravelPHP
0 likes · 11 min read
Automatic Detection of PHP Namespace and Class Constant Issues in Laravel Projects
Laravel Tech Community
Laravel Tech Community
Dec 7, 2020 · Databases

Understanding Redis’s Default 16 Databases and Their Proper Use

This article explains why Redis creates 16 logical databases by default, how to configure their number, the correct way to treat these databases as namespaces rather than separate stores, and why multiple databases are not supported in Redis Cluster mode.

ClusterConfigurationRedis
0 likes · 6 min read
Understanding Redis’s Default 16 Databases and Their Proper Use
Cloud Native Technology Community
Cloud Native Technology Community
Oct 28, 2020 · Cloud Native

Hierarchical Namespace Controller (HNC): Exploring Kubernetes Multi‑Tenant Model and Practical Use Cases

This article introduces the Hierarchical Namespace Controller (HNC) for Kubernetes, explains how to install and use it to create parent‑child namespaces, demonstrates role inheritance and two real‑world scenarios—self‑provisioning and application templating—while highlighting current limitations and community‑driven improvements.

DevOpsHNCKubernetes
0 likes · 9 min read
Hierarchical Namespace Controller (HNC): Exploring Kubernetes Multi‑Tenant Model and Practical Use Cases
DevOps Cloud Academy
DevOps Cloud Academy
Sep 23, 2019 · Cloud Native

Key Concepts of Kubernetes: Containers, Pods, Nodes, Namespaces, Services, and Labels

This article explains fundamental Kubernetes concepts—including containers, pods, nodes, namespaces, services, and labels—highlighting their roles, characteristics, and how they enable lightweight, portable, and efficiently managed cloud‑native applications.

ContainerKubernetesPod
0 likes · 2 min read
Key Concepts of Kubernetes: Containers, Pods, Nodes, Namespaces, Services, and Labels
58 Tech
58 Tech
Jun 21, 2019 · Cloud Native

Investigation and Resolution of Kubernetes API Server and Etcd Performance Bottlenecks in the 58 Cloud Platform

The article analyzes a slowdown issue in the 58 Cloud Platform caused by an overloaded API Server and uneven Etcd load, explains the root causes—including load‑balancing failure and missing namespace segmentation—and presents concrete remediation steps such as DNS round‑robin, namespace partitioning, Etcd client upgrade, and cache‑enabled queries.

CachingKubernetesPerformance
0 likes · 15 min read
Investigation and Resolution of Kubernetes API Server and Etcd Performance Bottlenecks in the 58 Cloud Platform
360 Zhihui Cloud Developer
360 Zhihui Cloud Developer
Aug 21, 2018 · Cloud Native

Kubernetes Namespace Resource Quotas: Set Defaults, Limits, and Enforce Policies

This guide explains how Kubernetes namespace-level resource management lets administrators set default CPU/memory requests, define minimum and maximum constraints, and enforce resource quotas, with step‑by‑step commands and YAML examples to create namespaces, ResourceQuota objects, and pods while handling quota limits.

KubernetesResourceQuotacloud-native
0 likes · 9 min read
Kubernetes Namespace Resource Quotas: Set Defaults, Limits, and Enforce Policies
360 Tech Engineering
360 Tech Engineering
Jul 26, 2018 · Cloud Native

Setting Default Resource Requests and Limits for Pods in a Kubernetes Namespace

This tutorial explains how to configure default CPU and memory requests and limits for containers in a Kubernetes namespace using LimitRange objects, demonstrates the effect with several pod examples, and shows how to clean up the resources afterward.

DevOpsKubernetesYAML
0 likes · 8 min read
Setting Default Resource Requests and Limits for Pods in a Kubernetes Namespace
Baidu Tech Salon
Baidu Tech Salon
Dec 12, 2014 · Frontend Development

Overview of HTML5 and Prospects for HTML6

HTML5, widely adopted for audio, video, offline storage and new semantic elements, remains evolving, while the speculative HTML6 proposal envisions namespace‑prefixed custom tags such as logo and html:media, richer metadata, unified APIs, and clearer semantics to improve readability and media handling, though it is not yet finalized.

Custom TagsHTML6Web Development
0 likes · 10 min read
Overview of HTML5 and Prospects for HTML6