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A repo of documentation, notes, summaries, fixes and solutions on software development and related topics

Most Recent Posts#

2026-05-15: Book Summaries The Snowball: Warren Buffett and the Business of Life
2025-09-01: Python Solid Principles and Top Design Patterns
2025-02-19: Elasticsearch Elastic in Action Notes
2024-06-16: Astronomy Galaxies
2024-06-16: Astronomy Stars
2024-06-16: Astronomy Big Bang
2024-05-16: Python Black Code Format - Set Line Length
2024-04-22: Postgres Postgres Caveats
2024-04-22: Python Compound Statements
2023-12-12: sqlalchemy Remove and add indexes programmatically

Table of Contents#

Home
- Most Recent Posts
- Table of Contents
- Android
- Ansible
- Api
- Astronomy
- Aws
- Azure
- Bitcoin
- Book-Summaries
- Buddha_Dhamma
- Celery
- Containers
- Css
- Datascience
- Devops
- Django
- Docker
- Economics
- Elasticsearch
- Financial-Planning
- Flask
- Git
- Gitlab-Ci
- Golang
- Http
- Juniper
- Kafka
- Keycloak
- Kubernetes
- Laravel
- Linux
- Load-Testing
- Mac
- Magento
- Magento2
- Microservices
- Mysql
- Network-Automation
- Networking
- Nginx
- Node
- Nosql
- Oauth
- Openshift
- Openwrt
- Php
- Postgres
- Profiling
- Python
- Queues
- R-Stats
- Redis
- Ruby
- Security
- Sqlalchemy
- Sqlite
- Startup
- Stoic
- Stylesheets
- System-Architecture
- Testing
- Tools
- Ubuntu-Debian
- Ux
- Vagrant
- Vim
- Virtualisation
- Vmware

Android#

2020-06-21: Bootstrapping An Android Project
2016-05-24: Unable To Import Library Via Gradle
2016-05-13: Android Could Not Resolve Error
2016-03-26: Publishing An App To Google Play Store
2015-09-13: Android Improving Performance With Images In Memory
2015-08-25: Install Android Studio Development Environment
2015-07-06: Android Project Setup Bible
2015-07-06: Android Log All Sqlite Statements
2015-06-07: Show Icons On Actionbar Not In Overflow Android
2015-06-07: Install An Apk
2015-05-29: Creating a Callback to Send Data From Fragment to Activity
2015-05-28: Remove Actionbar For Certain Activity
2015-05-15: Check Your Key Hash Android
2015-05-11: Android Sending Data Fragments And Activities
2015-02-26: Android Studio Cheatsheet
2015-02-13: View All Methods Local To A Class Android Studio
2015-02-13: Create A New Activity With Navigation Android

Ansible#

2022-03-15: Awx - Get a List of Available Collections in your Execution Environment
2021-08-24: Awx Moving Custom Venvs to Execution Environments
2020-06-14: Ansible Dynamic Inventory
2020-06-14: Awx Basics
2020-05-28: Awx Rest Api
2020-05-13: Awx - Give a Project a Custom Virtual Env
2020-05-13: Using External Ansible Modules
2020-05-13: Enter Python Debugger From Running An Ansible Playbook
2019-05-24: Ansible Playbooks
2019-05-23: Ansible Ad Hoc Commands
2019-02-23: Ansible Network Automation
2019-02-05: Common Ansible Errors
2019-02-05: Ansible Playbooks Beyond The Basics
2019-02-05: Ansible Setup
2019-02-05: Quickly Check Server Status Memory Storage
2015-09-20: Ansible Local Infrastructure
2015-01-25: Install Ansible Ubuntu

Api#

2022-05-31: API Design - Loosely Coupled Microservices
2022-05-30: Graphene GraphQL Library for Python
2022-05-30: Api’s - Rest vs Soap vs RPC vs GraphQL
2021-01-04: Api Product Manager
2020-07-29: Requesting An Oauth Token
2020-07-29: Api Security
2020-06-14: Designing Great Web Apis
2020-06-14: Kong King Of Api Gateways
2020-06-14: What Is OpenApi
2019-07-27: Api Tools, Articles and Resources

Astronomy#

2024-06-16: Galaxies
2024-06-16: Stars
2024-06-16: Big Bang
2022-06-30: Cosmos
2017-02-16: Asteroids
2017-01-23: Black Hole

Aws#

2023-10-12: AWS Database Migration Service
2022-10-01: AWS Codebuild
2022-08-03: AWS Certification Path
2022-08-01: AWS Lambda
2022-07-25: ECS - Elastic Container Service
2022-07-25: Aws Cli Tips
2022-07-14: Commonly used AWS Services

Azure#

2017-06-13: Basics Microsoft Machine Learning
2016-09-27: Azure Linux Vm Active Directory
2016-09-27: Azure Command Line
2016-08-21: R Programming Languaage Integration

Bitcoin#

2022-03-30: The Blocksize War - Summary Notes
2022-02-08: Mastering Lightning Network Notes
2022-02-03: The Fiat Standard Notes
2022-01-31: Self-Hosted Python Based Bitcoin Payment Processors / Gateways
2021-08-12: Learning Bitcoin from the Command Line Notes
2021-01-04: Grokking Bitcoin Notes
2020-11-07: The Bitcoin Standard Notes
2020-11-02: Mastering Bitcoin Notes

Book-Summaries#

2026-05-15: The Snowball: Warren Buffett and the Business of Life
2022-11-26: Free to Choose
2022-10-05: Steinhoff - Steinheist (Corporate Accounting Fraud)
2022-10-05: The Speedbag Bible Routines
2022-05-06: Fundamentals of Software Architecture
2022-04-26: Software Architecture - The Hard Parts
2022-04-26: Hard-Boiled Egg Index (Zimbabwe Inflation)
2022-04-26: Remote - Office not Required
2021-09-20: A Brief Timeline of World History
2020-11-10: Chess - Basics
2020-10-30: High Performance Sports Betting - Key Notes
2020-06-14: Zero To One
2019-07-27: Quotes
2019-02-16: Bad Blood Book Summary
2018-09-10: The Mythical Man Month
2015-09-13: The C Programming Language Summarised

Buddha_Dhamma#

2023-05-07: Dependent Origination
2023-01-30: Simple Core Path of Buddha
2023-01-20: Right Concentration - Meditation Guide
2022-09-01: Teachings from the Pali Canon
2022-07-20: Meditation - My thoughts and selected texts from readings
2022-06-24: Who ordered the Truckload of Dung Stories Summarised
2022-05-20: Core Fundamental Teachings of Buddha
2022-04-26: The 108 Defilements - Buddha
2017-02-16: Stars

Celery#

2023-04-17: Celery vs Faust
2020-06-14: Celery Basics
2019-12-24: Adding Tasks To A Celery Queue On An Infinite Loop

Containers#

2022-06-30: Podman vs Cri-o vs Containerd
2020-06-14: Kata Containers
2020-02-14: Tungsten Fabric
2020-02-14: Firecracker Microvm

Css#

2018-11-18: Bootstrap 4 Good Bits
2017-06-13: How To Maintain Line Breaks And Newline Formatting

Datascience#

2020-07-07: Numpy
2020-06-14: Pandas
2020-06-14: Python For Data Analysis
2020-05-25: Finding Outliers And Bad Data In Stock Data
2019-01-24: Statistics
2018-11-18: Pandas How To Make Column Values Into Column Index
2018-10-30: Pandas Change Column Data Type To Float Thousands Separator
2018-10-25: Machine Learning In Financial Markets
2017-10-29: Data Science Getting Started
2017-10-23: Backtesting Algorithmic Trading With Python

Devops#

2022-04-01: Naming Things
2019-09-23: Deploying Vault
2019-08-27: Vault Overview - Stored Secrets
2019-05-30: Automation Wisdoms
2015-10-28: Jenkins Host Key Verification Failed When Testing Ssh

Django#

2022-11-26: Django Cache
2021-12-20: Standalone Reusable Apps
2021-12-19: Django and HTMX
2020-06-21: Django Orm
2020-06-14: Django - Getting Started
2020-06-14: Django Multi Tenant App
2020-06-14: Django Forms
2020-06-14: Obey The Testing Goat
2020-02-01: Django How to get the Root Path
2019-09-23: Django Permissions Without A Model
2019-06-21: Django Rotating Log
2019-04-24: Django Class Based Views
2019-03-27: Django Rest Framework (DRF)
2018-09-08: Make Django Rest Framework Datetime Fields Timezone Aware
2018-06-13: Django Locale
2018-01-29: Django Escaping Html In Test
2018-01-21: Django Adding Default Data After Migrations
2018-01-21: Testing Model Is Registered On Admin Site
2018-01-08: Django Signals
2017-11-07: Must Have Python And Django Libraries
2017-11-06: Django Migrations
2017-10-23: Django Model Validations
2017-10-11: Django Authentication
2017-10-11: Django Workday Hours Model Field
2017-10-02: Django Best Practices
2017-10-02: Django Testing Admin
2017-09-08: Django Social Authentication
2017-08-19: Django Admin
2017-07-27: Templates
2017-07-19: Testing
2017-07-19: Django Models
2017-07-19: Urls
2016-03-21: Django Shell

Docker#

2020-06-14: Docker Commands Quick Start
2020-06-14: Push Image To Private Image Registry
2020-06-14: Docker Basics
2020-04-20: Ssh Into Docker
2020-02-06: Find All Images In Your Docker Registry
2019-11-18: Edit A File In Docker Container With No Editor
2019-11-18: Mount Volume Into Running Container
2019-11-04: Containerisation Options
2019-10-24: Docker Faq
2019-10-24: The Path Of Docker
2019-10-14: Docker Portainer Build Invalid Reference Format
2019-10-14: Docker Environment Variables
2019-09-23: Docker Systemd Script
2019-05-30: Docker Host Network

Economics#

2022-12-15: Quotes
2022-06-03: Tips on Selling Cars
2021-12-20: Notes on Education Free and Compulsory - Murray Rothbard
2021-12-20: A Tour of Economics
2020-09-25: Basic Economics - Thomas Sowell

Elasticsearch#

2025-02-19: Elastic in Action Notes
2022-12-12: Change Mapping of an Index in Kibana
2020-03-05: Queries
2019-12-10: Elasticsearch And Python
2019-05-30: Logstash
2016-09-26: Elastic Search Basics

Financial-Planning#

2020-06-14: South African Financial Planning

Flask#

2017-12-19: Flask Basics

Git#

2023-05-15: Revert a Merge
2023-04-10: Git Checkout a Tag
2022-07-05: Git Submodules
2020-06-21: Git Corrupt Loose Object
2019-07-22: Sync Pull From Upstream In Your Fork
2019-07-22: Fetch And Track All Remote Branches
2017-02-23: Git Commands
2016-01-19: Find When A Specific Line Was Removed
2015-01-18: Install Latest Git On Ubuntu

Gitlab-Ci#

2020-06-14: Continuous Integration Gitlab
2020-06-14: Gitlab Runners

Golang#

2015-06-07: Getting Started With Golang

Http#

2023-05-02: Check if Gzip is Enabled
2022-11-09: HTTP Caching
2022-06-23: Http3
2020-07-29: Http2
2020-06-14: Http Error Codes Simple Description
2020-03-05: Debug Http Webhooks
2017-08-24: Rest Api
2017-07-14: Introduction To Http

Juniper#

2021-02-04: Juniper associate JNCIA Learning Notes

Kafka#

2020-06-14: Kafka Short Intro

Keycloak#

2021-12-23: Notes on Keycloak - Identity and Access Management for Modern Applications
2020-07-07: Keycloak Single Sign Out
2020-06-14: Keycloak Adapters
2020-06-14: Keycloak Essential
2020-05-19: Creating A Keycloak Theme
2020-04-20: Adding Attributes To A User In Keycloak
2020-02-14: Identity Brokering
2020-02-14: Events
2020-02-14: Multitenancy
2020-02-14: Authentication Flow
2020-02-14: Keycloak And Django
2020-02-14: Roles
2020-02-14: Groups

Kubernetes#

2020-10-27: Rancher RKE 413 Request Entity Too Large when uploading a file Nginx controller
2020-08-13: Create A Persistent Volume
2020-08-13: Rancher Certified Operator
2020-07-07: Helm Overview
2020-06-14: Set Up Monitoring On K8s Cluster
2020-06-14: Small K8s Distributions
2020-06-14: K3s
2020-06-14: Converting Modernising Applications For K8s
2020-06-14: Kubernetes Up And Running
2020-06-14: Rancher Intro
2020-05-19: Create A Namespace
2020-04-20: Rancher 2.4
2020-03-05: Operators
2020-01-13: Change Current Namespace
2020-01-13: Troubleshooting And Debugging Kubernetes
2020-01-06: Monoliths To Microservices
2019-12-24: Rancher Get Kubeconfig
2019-12-24: Kubectl Cheatsheet
2019-12-24: Rancher Rke Under The Hood
2019-12-24: Ssh Into Kubernetes Pod
2019-11-04: Shooting Yourself In The Foot With Kubernetes

Laravel#

2016-06-18: Laravel 5.2 Changelog Whats New
2015-12-24: Debugging Db Queries
2015-10-28: Laravel 5 Models
2015-10-16: Laravel Set Environment
2015-10-09: Laravel Routes
2015-10-09: Laravel 5 Layout
2015-10-09: Laravel Blade Templating Engine
2015-10-09: Creating A Controller
2015-10-09: Laravel 5 Elixir
2015-09-25: Setting Up Homestead
2015-09-24: Laravel 5 Setup

Linux#

2022-10-13: Grep Regex Invert and Lookahead
2022-08-30: How to View the Command Name in Top
2020-09-15: Installing Pandoc on CentOS
2020-06-21: Create A Systemd Script For Mailcatcher
2020-06-14: Python - avoid venv clashes with
2020-05-12: View Banned Ips From Iptables In Fail2ban
2020-05-12: Set Timezone On Linux Server
2019-09-23: Ssh Agent Forwarding
2019-09-04: View Process Listening On Ports
2019-09-04: Add Users Python Packages To Path Ubuntu
2019-09-04: Unix Sockets
2019-08-27: Find Large Files
2019-08-12: Making Lxc Containers Available With Public Ips
2019-08-12: Ssh Into Lxd Container
2019-08-12: Lxd Cluster
2019-06-13: Python Linux Exit Codes
2019-05-31: SystemD Overview
2019-05-30: Firewall Cmd
2018-08-19: Setup An Ubuntu Vps Quickly
2016-08-12: Copy Your Ssh Key To Clipboard Fast
2015-01-18: Htaccess Not Recognised Ubuntu

Load-Testing#

2022-06-28: Using h2load
2022-06-28: Using Apache Bench

Mac#

2022-11-20: Installing Binaries on Mac
2020-06-03: Freeing Up Space On Your Development Macbook
2019-10-24: How To Stop Mysql On Mac Os
2019-07-22: Where Binaries Should Stay

Magento#

2020-06-21: How To Debug Local Email On Development Machine Magento Without A Smtp Server
2020-06-21: Log To A File in Magento 1
2017-01-14: Magento 1 Links
2015-01-18: Top Tips Magento
2015-01-18: Create A Custom Block in Magento 1
2015-01-18: Add Customjs To Cms Page Magento 1
2015-01-18: Enable Logging Magento 1
2015-01-18: Disable Poll Magento 1
2015-01-18: Set Layout Of Category Page
2015-01-18: Permissions Mcrypt Gd Must Be Loaded
2015-01-18: Move Sidebar Shop By Or Categories To Left Or Right

Magento2#

2020-06-14: Theming Magento 2 Core Principles
2020-06-14: Magento 2 Database And Models
2020-06-14: Theming Magento 2 Customisation
2020-06-14: Magento 2 Api
2020-06-14: Magento 2 Rendering
2020-06-14: Theming Magento 2 Layout Basics
2020-06-14: Magento 2 Fundamentals Of Development
2020-06-14: Magento 2 Request Flow
2017-07-21: Increase File Size Limit Magento 2 Nginx Php Fpm
2017-06-30: Magento 2 Logrotate For Logs Getting Large
2017-05-24: Profiling With Nginx
2017-04-08: Setup Free SSL Lets Encrypt HTTPS Certificate Magento 2
2017-02-01: Responsive Web Design Magento2
2017-02-01: Set Up Mail Magento2
2017-01-27: Magento 2 Links
2017-01-16: Magento 2 Get Thumbnail Image From A Product
2017-01-09: Magento 2 Custom Stock Status Custom Development
2016-12-14: Install Php7 Magento 2 Dependencies
2016-11-02: Issuing A Let’s Encrypt Certificate For Magento2 With Nginx
2016-07-28: Magento 2 Initial Admin Configuration

Microservices#

2022-07-14: Backend for Frontend - API Pattern
2022-06-27: gRPC
2022-06-24: Protocol Buffers
2022-06-05: Simple Description of Microservices
2020-06-14: Netflix Guide To Microservices
2019-11-04: Failing At Microservices

Mysql#

2022-12-15: Monitoring Performance
2022-06-22: MySQL - Performance, Scaling and Connections
2022-05-26: Create a MySQL User and Grant Access to a Database
2022-05-23: How to Delete a MySQL User
2022-02-14: Create a database schema with the Correct Collation
2019-10-24: Groupwise Maximum
2019-08-27: Turn On Mysql General Log

Network-Automation#

2021-12-24: Netbox Extensibility Overview
2021-11-25: Step by step guide developing a netbox plugin
2021-01-07: Network Automation Cookbook Notes
2020-10-15: Advanced Batfish: Integrating Network validation and CI
2020-10-15: Getting Started with Juniper and Batfish
2020-07-07: Pyez Dev Guide
2020-06-14: Terraform Overview
2020-06-14: Jsnapy
2020-06-14: Network Programmability And Automation
2020-05-28: Sdn Nfv Openflow Whitebox Switching
2019-07-30: Terraform With Vmware
2019-04-30: Napalm Network Automation Basics
2019-03-14: Key Takeaways Network Automation
2019-03-14: Ansible Molecule Testing
2019-03-14: Test Infra
2019-02-24: Network Automation Terms Glossary
2019-02-23: Basic Networking Utilities Cheatsheet
2019-02-23: Intro Ansible Network Automation

Networking#

2020-11-25: BGP
2020-10-05: How does an Internet Subscriber’s traffic Flow travel from Service Provider Perspective
2020-07-07: Packet Guide To Core Networking Protocols
2020-06-03: Ipv6 And Never Going Sub Slash 64
2019-07-27: Find Local Devices Dhcp
2019-06-13: Centos Routes

Nginx#

2022-12-19: Nginx Cookbook
2022-06-15: Nginx - Proxy vs Reverse Proxy
2019-09-04: SELinux And Nginx
2019-05-30: Nginx On Centos
2016-12-14: Enable A Site From Sites Available

Node#

2019-09-23: Running A Production Node App
2015-01-18: Update Node Js

Nosql#

2022-06-25: MongoDB Basics
2022-06-25: Which Open Source (Self-hosted) NoSQL DB?

Oauth#

2020-08-13: Difference Between Grant And Scope
2020-05-28: Oauth And Openid Connect

Openshift#

2020-06-14: Django Openshift
2020-06-14: Deploying To Openshift
2019-11-18: Add User To Cluster Admin Role
2019-11-18: Internal Registry
2019-11-18: Minishift On Mac
2019-11-04: Autoscaling In Openshift
2019-11-04: Openshift Web Console White Screen Of Death
2019-11-04: Openshift Cli
2019-10-14: Openshift Registry Setup

Openwrt#

2022-02-03: Openwrt Userguide Notes
2021-12-27: Installing OpenWRT on a Mikrotik Hap AC2

Php#

2022-12-23: PHP FPM
2017-08-02: Php Testing
2017-06-13: Switch Php Version On Ubuntu 16
2017-04-16: Switch Php Version With Mac Homebrew
2016-09-26: Bus Error Core Dumped

Postgres#

2024-04-22: Postgres Caveats
2023-06-02: Allow Remote Postgres Cluster Access
2023-02-10: DBA General Health Tasks
2023-01-30: Choosing a primary key
2022-12-21: Create a Postgres User and Grant Access to a Database
2022-12-14: Postgres - Querying the pg_stats_statements view
2022-12-14: Pgbench
2022-12-12: Postgres - DBA Tasks
2022-12-11: Extension Must be Loaded via Shared Preload Libraries
2022-12-05: Postgres - PGBouncer
2022-12-05: Postgres - Explaining EXPLAIN
2022-12-01: Postgresql - Statistics Collector
2022-11-29: The Art of Postgresql
2022-11-25: Postgres - Cool and Useful Postgresql Tools
2022-11-08: Postgres Terminology
2022-11-07: Upgrading Postgresql on Ubuntu
2022-10-25: Postgres Performance
2022-10-24: Postgres - Finding Missing Indexes
2022-10-15: Give a user access to read stats
2022-10-10: Postgres - Transaction Isolation
2022-07-22: Postgres Connections and Load
2020-08-13: Postgres Cheat Sheet
2018-09-10: Postgres Up And Running
2018-09-10: psql

Profiling#

2023-01-04: Snakeviz
2022-12-02: Profiling Memory
2022-11-13: Pyroscope profiling

Python#

2025-09-01: Solid Principles and Top Design Patterns
2024-05-16: Black Code Format - Set Line Length
2024-04-22: Compound Statements
2023-08-30: Python Sockets How To
2023-05-01: Joblib and Memoization
2023-04-20: 10 Python Performance Tips
2023-01-15: Testing with Pytest
2023-01-10: High Performance Python
2023-01-04: Importing a module gives module has no attribute
2022-12-01: Find the Size of a Python Dictionary
2022-11-30: Python Caching
2022-11-30: Python Redis Cache
2022-11-24: Enable Logging peewee
2022-11-10: Mocks - Where to Patch?
2022-08-20: Python Logging
2022-08-15: Python Tutorial
2022-08-13: Why does the Python Debugger not Work Sometimes
2022-08-08: Click - command line arguments in python
2022-08-08: Python Packaging - an Overview
2022-07-30: Python Gotchas
2022-07-25: Nosetests
2022-07-25: Python docs - The Import System
2022-07-25: What is the meaning of Underscores in Variables Names in Python?
2022-07-25: Docstring types
2022-07-14: Tornado Web Server
2022-07-12: Packaging - Pip Install for Development
2022-07-12: After Dropping into a Python Debugger the Prompt does not type back commands
2022-07-10: Offline Python Docs
2022-07-05: Packaging - Wheel vs Egg
2022-06-22: Asking for Forgiveness or Look Before You Leap
2022-05-10: Common python Interview Questions
2022-05-06: Linked Lists
2022-04-15: Summary of Understanding Decorators in Python
2022-01-21: Design Patterns
2020-10-08: How to show server rendered graphviz on html frontend
2020-10-07: Convert XML to JSON
2020-06-21: Refactoring Python
2020-06-21: Install Update Pip
2020-06-21: File Systems
2020-06-21: Finding Modules And Packages
2020-06-14: Managing Configuration
2020-06-14: Effective Python
2020-06-14: Asyncio Concurrency
2020-06-14: Task Queues
2020-06-14: Concurrency
2020-06-14: Black Magic Of Python Wheels
2020-05-19: Splitting A List And Assigning From Each Group
2020-03-05: Jinja Append To List
2020-03-05: Using Black In Vscode To Automatically Format Codestyle
2019-12-10: Creating A Simple Python Library
2019-10-24: Argparse Getting Arguments Nicely In Python
2019-08-15: Json Loads Invalid Control Character
2019-08-12: Packaging A Python Executable
2019-07-22: Code Smells
2019-07-22: Stop Writing Classes
2019-07-22: Pretty Print Json
2019-07-22: Sorting Json Dict By Value
2019-07-17: Python Exceptions
2019-07-17: What Your Pypirc Can Look Like
2019-07-17: Dictionaries
2019-07-16: Pytest
2019-07-12: Using Jinja2
2019-07-12: How To Skip A Unit Test
2019-07-12: Print A Python Dict Nicely
2019-07-12: Regular Expressions
2019-07-10: Create And Publish A Python Package To Pypi
2019-07-10: Dependency Hell
2019-07-10: Composition Vs Inheritance
2019-07-10: Mock A Single Instance Method
2019-06-13: Python Imports
2019-06-13: Convert Json To Yaml
2019-05-31: Install Pip Package Globally
2019-04-10: Dump Text From Ipython
2019-03-14: Mock An Entire Module
2019-02-02: All About Mod Wsgi
2018-08-10: Idiomatic Python
2018-07-11: Python Generators
2018-06-15: Force Python Package To Upgrade
2018-02-21: Basics
2017-12-24: Pipenv
2017-11-08: Comprehensions
2017-11-07: Make A Python 3 Virtual Environment
2017-10-29: Ipython
2017-10-16: Static Class Methods
2017-09-26: Create An Md5 Hash
2017-09-23: Expecting A Test To Fail
2017-09-23: Start With A Failing Test Django
2017-09-22: Using Bigger Numbers
2017-09-13: Tips And Tricks
2017-09-13: The Powerful Else Keyword
2017-09-12: Dates And Times
2017-09-11: Secrets Module
2017-09-11: Better String Interpolation
2017-09-11: Writing Better Python
2017-09-10: Object Oriented
2017-09-10: Object Oriented Python
2017-09-10: Setting Kwargs To An Instance
2017-07-12: Python Unit Tests
2017-07-12: Python Code Coverage
2017-07-05: Zen Of Python
2017-04-18: Using Databases With Python
2017-02-19: Python collections
2017-02-18: Debugging Using Ipdb
2017-02-16: Doc Tests
2017-02-16: Unit Tests
2016-06-18: Simple Quick Webserver For Serving Local Files
2016-05-10: Getting Help Using Pydoc And Help
2015-12-28: None
2015-03-21: Setup Virtual Environment On Ubuntu
2015-01-25: Install Python On Ubuntu

Queues#

2022-07-25: Task Queue vs Message Queue
2022-07-22: ZeroMQ
2019-10-24: Rabbit Mq Basics

R-Stats#

2020-07-07: R Stats Basics
2020-06-14: Exploratory Data Analysis
2018-05-23: Regression Models
2018-03-19: Setting Up R On Macos

Redis#

2022-12-10: Redis Sysadmin Tasks
2022-12-10: Redis - MISCONF Redis is configured to save RDB snapshots
2022-06-14: Redis Key Patterns
2020-06-14: Redis Basics

Ruby#

2020-06-14: Convert Rails Sqlite To Mysql
2019-09-23: Ruby On Mac
2015-11-03: How To Add Gem To Gemfile With Commandline
2015-05-10: Create A Rails Api Quickly
2015-03-16: Update Ruby With Rbenv
2015-01-25: Mod Passenger Permissions Spawn
2015-01-18: Installing With Without Rdoc Ri
2015-01-18: Initial Setup Rails
2015-01-18: Update Ruby On Rails

Security#

2021-09-15: How to Verify a .sig with PGP on Mac 10.13
2021-08-05: LDAP System Administration
2020-09-20: SSH - The Secure Shell Book (Notes)
2020-06-23: Openssl Cookbook
2020-06-14: Applied Cryptography Notes
2020-06-11: Serious Cryptography
2019-11-18: Check Ssl Certs
2019-08-04: Sha256 Checksum Verification
2017-11-28: Encryption Vs Cryptographic Hash

Sqlalchemy#

2023-12-12: Remove and add indexes programmatically
2022-10-25: SQLAlchemy - Enable logging
2022-07-22: Sqlalchemy - Alembic Migrations
2022-07-22: Sqlalchemy

Sqlite#

2022-09-01: SQLite and Python
2022-09-01: Fundamentals of SQlite

Startup#

2020-07-07: It Doesnt Have To Be Crazy At Work
2020-06-14: Software As A Service
2020-04-17: Building Scalable Web Applications

Stoic#

2021-10-01: Notes on Meditations by Marcus Aurelius
2021-09-20: Summarised Stoic Teachings and Quotes
2021-09-20: 50 Rules for Life - Daily Stoic
2021-09-20: Notes on Enchiridion by Epictetus

Stylesheets#

System-Architecture#

2022-05-09: Databases, Events and Scale
2018-08-10: Multi Tenancy

Testing#

2020-11-08: Test Automation strategy Notes
2020-06-14: Api Contract Testing
2018-09-12: Fast Test Slow Test

Tools#

2022-12-20: Varnish Cache
2022-11-23: Pngquant compress images in place
2022-07-14: Remote Dev Debugging with SSHD
2022-07-05: What is MQTT?
2022-06-30: Fancy Words
2022-06-15: Secrets of Code Review
2021-03-13: TCPDump
2020-10-30: Words and Definitions
2020-09-03: Learning Emacs - Book Notes
2019-10-24: Convert Mardown To Docs
2019-10-07: Tmux
2019-09-23: Sphinx Readthedocs
2019-09-23: Writing Good Documentation
2019-08-17: Jq Json Processor
2019-08-16: Find Java Home On Mac
2017-11-08: Setting Python Path With Vscode
2017-02-01: Mailcatcher Setup
2017-01-16: Fix Utorrent making your Router disconnect from the Internet

Ubuntu-Debian#

2020-06-21: Search For Text In Multiple Pdf And Show Line Numbers
2020-06-21: Add Someone Elses Public Key To Remote Server
2019-08-27: How To Scp Files Between Machines
2016-12-14: Create New User
2016-12-14: Setup Firewall on Ubuntu (UFW)
2016-10-27: Compress And Decompress Tar.Bz2 Files
2016-08-06: How To Setup Key Based Ssh Authentication
2015-10-21: Run Commands On A Remote Machine As Root
2015-08-25: Genymotion Unable To Load Virtualbox Engine Restart Virtualbox
2015-08-25: Setup Ssh Aliases
2015-08-25: Copy The Contents Of A File Top Clipboard From Commandline

Ux#

2020-06-14: Ux Design In 60 Seconds

Vagrant#

2020-06-21: Setting Up Vagrant And Virtual Box
2019-08-12: Ssh Directly To Vagrant Without Vagrant Ssh
2015-09-25: Vagrant How To Save And Store Images
2015-03-23: Where Do Downloaded Vagrant Boxes Get Stored
2015-03-23: Common Vagrant Commands
2015-03-23: Things Vagrant Can Do

Vim#

Virtualisation#

2021-11-23: Types of Virtualisation Storage
2021-10-12: Mastering KVM Notes
2019-10-07: Lxd

Vmware#

2020-06-14: Vcenter Vs Vsphere Esxi
2020-06-14: Vsphere Rest Api
2020-05-28: Vmware Remote