• index

Computer Architecture

• Instructions Per Cycle / Cycles Per Instructions and Classic RISC Pipeline

Data Structure & Algorithms

• Tail Recursion / Tail Call Optimization
• Takeaways from Codeforces Round 991
• Radix sort
  • Radix sort (string)
• Counting sort
• Suffix array
• Topological sorting - Kahn’s algorithm
  • Topological sorting - recursive approach
• Disjoint Set Union
  • Applications to Codeforces problems
• Memoization / Tabulation (20240530)

Web / Network

• CSRF (Cross-Site Request Forgery)
• whois, clientHold, and serverTransferProhibited
• Why is Authorization Header Used for Authentication? (Authentication vs Authorization)
• PGP and PEP 761 - Deprecating PGP signatures for CPython artifacts
• Mastodon streaming API: persistent HTTP connetions and WebSocket
• HTTP-01 challenge and certbot
• Representational State Transfer (REST) / Roy Fielding’s dissertation
• MIME types (20240716)
• DNS server types (20240623)
• SSH and Git hosting services (20240622)
• AWK / Network File System (NFS) / DNS propagation (20240617)
• Amazon EFS (Elastic File System) / traceroute (20240612)
• ping, ICMP (Internet Control Message Protocol) (20240611)
• 410 Gone (20240609)
• The Internet Engineering Task Force (IETF) (20240529)
• How port numbers assigned (22, 80, 443) / GitHub Actions actions/cache (20240528)
• NAS (20240525)
• Enabling HTTP/2, Git Aliases (20240523)
• HTTP/2 vs HTTP/1.1 (20240522)
• TLS certificate providers (20240514)
• DOM (20240513)
• WebRTC (20240503)

Database

• ACID
• Browsing Web Pages on Data Management in the Microservice Architecture Pattern
• Default Isolation Level in PostgreSQL
• Denormalization

Infrastructures

• Kubernetes Probes: Liveness, Readiness, and Startup Probes
• Cloudflare Tunnels
• Troubleshooting: Cloudflare’s Bot Fight Mode Rejected Requests From Mastodon
• Logs in Docker
• Jenkins and GitHub Actions
• Should microservices share a cache and message queue?
• Amazon S3 Miscellaneous
• AWS Lambda (20240626)
• Cloudflare Flexible SSL/TLS encryption models / Frontend Deployment (20240527)
• The default path for a Docker Compose file, Kompose to convert Docker Compose to Kubernetes (20240524)
• Docker Image: slim/alpine/bookworm (20240521)
• Apache (20240501)

Machine-learning / LLM

• MCP Server
• Model Context Protocol (MCP)
• Quick Tryout with Ollama
• AWS Trainium / AWS Inferentia / AWS Neuron / Amazon SageMakder / Amazon Titan
• andrewng/aisuite
• A First Look at GraphRAG and LightRAG (not in detail)
• Amazon Bedrock
• The history of YOLO (You Only Look Once) and improvements in YOLO11
• ChromaDB and SQLite
• Embeddings in LLM
• Tokens in LLM
• Running Chroma
• torch.no_grad()
• RAG (20240516)

Services

• Manually Triggering Dependabot Updates
• Check how fast uv is
• Is uv supported by Dependabot? - No (as of Nov 2 2024)
• Upgrading AWS Lightsail instance
• Amazon S3 and GitHub Actions
• GitHub Actions to perform operations only for changes
• dependabot and poetry
• GitHub Issue & PR templates
• Ingress
• LlamaParse / Apache Airflow
• Some of Netlify features (20240610)
• Billing of DataDog and GitHub Actions / Google Testing Blog (20240604)
• Custom domain configuration for GitHub pages (20240502)

Programming Languages

Python

• Python can run about 1 million basic steps per second
• “Why does id({}) == id({}) and id([]) == id([]) in CPython? [duplicate]”
• Template strings
• MEMO: PEP 484
• Re-visiting PEP8
• test coverage threshold with pytest-cov
• map(), functools.reduce(), (and MapReduce)
• issubclass(bool, int) is True - Python
• Decorator - Python
• Rye - Python (20240718)
• gc - Garbage Collector Interface - Python (20240717)
• Wheel (Python) (20240714)
• Duck typing (20240505)

Others

• Tail Call Optimization
• global installation in npm (20240506)
• Responsibility of Node.js (20240504)
• == vs === in JavaScript (20240425)

Design Principles

• MVC (Model-View-Controller)
• Object-Oriented Programming (OOP)
• Simple Factory Pattern and Strategy + Factory combo
• Strategy Pattern
• Porposes of assert
• Repository Design Pattern
• Separations of Concerns in Software Design | Loose Coupling and High Cohesion

Web Development

• Progressive Web App / Web Application Manifest
• Node.js

OSS

• Proprietary Software Definition
• OSS License: MIT / AGPL
• Peeking Under the Hood of PyMuPDF - flags

News

• Conguratulations: Tourist has reached a rating of 4000! by MikeMirzayanov
• Tim Peters has been suspended from Python Software Foundation

Git

• Counting insertions/deletions in a Git repository
• git checkout --theirs .
• Forking v.s. Branching (only have link to StackOverFlow)

IMO

• Why You Shouldn’t Create Indexes For All SQL Columns
• A Benefit of Django - Batteries Included

Others

• How to check leap years
• Fire And Motion by Joel Spolsky
• The reason why Meta’s Llama models and LlamaIndex use the word “Llama”
• Encoding and Serialization
• Upgrading Amazon Lightsail Plan
• Troubleshooting: Checking Logs In My Mastodon Server
• Django REST framework - built-in pagination
• Unix time
• Checking NGINX status
• INI file
• Understanding Mastodon System Components
• Blog: Spam Attacks on Fediverse
• Implemented a simple RAG system
• Troubleshooting: docker stats of my Mastodon instance
• STRIDE
• async and await (haven't researched in details) / Cyclomatic Complexity
• Red Green Refactor
• Mob Programming / Pair Programming

Books

• Designing Data-Intensive Applications - Chapter 12 - The Future of Data Systems
• Designing Data-Intensive Applications - Chapter 11 - Stream Processing
• Designing Data-Intensive Applications - Chapter 10 - Batch Processing
• Designing Data-Intensive Applications - Chapter 9 - Consistency and Consensus
• Designing Data-Intensive Applications - Chapter 8 - The Trouble with Distributed Systems
• Designing Data-Intensive Applications - Chapter 7 - Transactions
• Designing Data-Intensive Applications - Chapter 6 - Partitioning
• Designing Data-Intensive Applications - Chapter 5 - Replication
• Designing Data-Intensive Applications - Chapter 4 - Encoding
• Designing Data-Intensive Applications - Chapter 3 - Implementation of Data Storage
• Designing Data-Intensive Applications - Chapter 2 - Data Models and Query Languages
• Designing Data-Intensive Applications - Chapter 1

Papers

Psychology

• Room Color and Agression in A Criminal Detention Holding Cell… Robert J. Pellegrini

Others

• Visual discomfort and glare assessment in office environments: A review of light-induced physiological and perceptual responses
• Total-Ionizing-Dose Effects on 3D Sequentially Integrated, Fully Depleted Silicon-on-Insulator MOSFETs
• Measuring the Effects of Autonomous Mobile Robot on Pedestrian Behavior

Life

• The Trading Game: A Confession
• 無 (最高の状態)
• 億までの人 億からの人
• taking breaks
• connecting dots
• ゆうきゆう - 瞬時にやる気を燃やす31の心理学技術
• ゆうきゆう - やりたいことを次々と実現する人の心理術
• ゆうきゆう - 人生を好転させるシンプルな習慣術