VirtualTam's bookmarks

1. ESPARGOS - ESP32-based WiFi sensing array 2025-02-17

   tags: embedded, microcontroller/espressif/esp32, network/wireless/wifi, physics, programming/python, visualization

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   • Dataset: Four phase- and time-synchronous ESPARGOS antenna arrays in a lab room
   • ESPARGOS/pyespargos - Python library for working with the ESPARGOS WiFi channel sounder
   • This ESP32 Antenna Array Can See WiFi
   • Source Code for Paper "Augmenting Channel Charting with Classical Wireless Source Localization Techniques"
   • Phased Arrays - Steering and the Antenna Pattern | An Animated Intro to Phased Arrays
2. pytudes - Python programs, usually short, of considerable difficulty, to perfect particular skills 2025-02-07

   tags: algorithm, data-science, programming/python, programming/python/jupyter

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3. Cloudflare - Over 700 million events/second: How we make sense of too much data 2025-02-04

   tags: cloud-computing/cloudflare, observability/logging, programming/go

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4. Python 3 - struct - Interpret bytes as packed binary data 2025-01-19

   tags: binary, parser, programming/python

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   • Format Characters
5. Go - Truncate strings with special characters without corrupting data 2025-01-05

   tags: programming/go, text/unicode

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   • Strings, bytes, runes and characters in Go
   • x/exp/utf8string - Index strings by rune rather than by byte
   • How can I elliptically truncate text in golang?
   • Why can the Go string type contain invalid UTF-8 data?
6. UsenetArchives - One of the most extensive archives of Usenet newsgroups on the Internet 2024-12-08

   tags: bulletin-board-system, forum/usenet, history, storage/tape, text

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   • Converting UTZOO-Wiseman Usenet Tapes to Website with PostgreSQL backend using Python 3.8
   • 2.1 Million of the Oldest Internet Posts Are Now Online for Anyone to Read
   • DataHoarders, UsenetArchives.com now includes UTZOO-Wiseman tapes of the earliest internet posts made between Feb 1981 and June 1991
   • The UTZOO Wiseman Usenet Archive (data removed following legal action)
7. Model Context Protocol (MCP) - An open protocol that enables seamless integration between LLM applications and external data sources and tools 2024-11-30

   tags: editor, network/http, network/json-rpc, neural-network/large-language-model, programming/json, text

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   • Anthropic - Introducing the Model Context Protocol
   • modelcontextprotocol repositories
8. Text normalization in Go 2024-11-28

   tags: ietf/rfc, programming/go, text/ascii, text/unicode

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   Standard library:

   • unicode - Data and functions to test some properties of Unicode code points

   Extra libraries:

   • golang.org/x/text - Supplementary Go packages for text processing, many involving Unicode
   • golang.org/x/text/runes - Tansforms for UTF-8 encoded text
   • golang.org/x/text/transform - Reader and writer wrappers that transform the bytes passing through
   • golang.org/x/text/unicode/norm - Types and functions for normalizing Unicode strings
   • golang.org/x/text/unicode - Building blocks for other packages in golang.org/x/text

   Third-party libraries:

   • anyascii/go - Converts Unicode characters to their best ASCII representation

   RFCs:

   • RFC 8264 - PRECIS Framework: Preparation, Enforcement, and Comparison of Internationalized Strings in Application Protocols
   • RFC 8265 - PRECIS for Usernames and Passwords
   • RFC 8266 - PRECIS for Nicknames

   Resources:

   • Unicode - General Category Property
   • Diacritic
   • Unicode Equivalence
   • Unicode Equivalence - Normal Forms
   • When to use Unicode Normalization Forms NFC and NFD?
   • Remove diacritics using Go
9. psqlrc - PostgreSQL command-line client configuration 2024-11-19

   tags: command-line/pager, database/postgresql

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   • How To Customize the PostgreSQL Prompt with psqlrc on Ubuntu 14.04
   • datachomp//dotfiles - psqlrc
   • okbob/pspg - Pager specialized for tabular data
10. Making USB devices - end to end guide to your first gadget 2024-11-19

    tags: electronics/pcb, embedded, microcontroller/st-microelectronics/stm32, programming/c, serial-communication/usb

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    • Build own USB device on linux-based board!
    • What Are Differential Pairs?
    • How to route USB data lines on a PCB
    • Can You Route USB 2.0 on a 2-Layer Board?
    • KiCad STM32 Hardware Design - An Overview in 20 Minutes - Phil's Lab #15
    • STM32 Programming via USB (DFU) - Phil's Lab #72
    • How To: STM32F103C8T6 As An USB Device (Virtual Serial Port / CDC)
11. FerrarGIS - Using QGIS to apply a 1777 style to today's OpenStreetMap data 2024-11-19

    tags: geography/gis, map, openstreetmap

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    • mclaeysb/FerrarGIS
    • Un nouveau style QGIS pour OpenStreetMap
12. CNIL - Les courriers pour agir 2024-10-25

    tags: data, france, privacy/gdpr

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13. Crucible - A distributed network-replicated block storage service 2024-10-25

    tags: distributed-system, programming/rust, storage/block-storage, virtualization

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    • Oxide RFD 60 - Storage Architecture Considerations
    • Oxide RFD 177 - Implementation of Data Storage
14. Ibis - The portable Python dataframe library 2024-08-29

    tags: data, database, programming/python, programming/sql

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    • ibis-project
15. Kestra - Orchestration platform for scheduled and event-driven workflows 2024-06-09

    tags: data/workflow, programming/java, programming/javascript

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    • kestra-io/kestra
    • Show HN: Kestra - Open-Source Airflow Alternative
    • How Leroy Merlin managed their cloud data pipelines with Kestra
16. InfluxDB Tech Tips — Optimizing Flux Performance 2024-06-01

    tags: observability/time-series/influxdb

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    • Top 5 Hurdles for Flux Beginners and Resources for Learning to Use Flux
    • Top 5 Hurdles for Intermediate Flux Users and Resources for Optimizing Flux
    • Optimize Flux queries
    • Sort and limit data with Flux
17. Crowdsec - Curated Threat Intelligence Powered by the Crowd 2024-05-29

    tags: bsd, linux/iptables, network/firewall, observability/logging, programming/go

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    • crowdsecurity/crowdsec
    • Documentation
      • Docker / Podman Deployment
      • Data Sources
      • Parsers
      • Configuration
      • Observability / Prometheus
      • OpenAPI Specification
    • Blog
      • Building a Network for Small Businesses Part 1: Hardware
      • Building a Network for Small Businesses Part 2: Running Configurations
      • Building a Network for Small Businesses Part 3: Attack Scenarios
    • Discussion on HN (2020)
18. CoreDNS - DNS and Service Discovery 2024-05-28

    tags: network/dns, network/dnssec, programming/go

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    • coredns/coredns
    • Quick Start
    • Plugins
      • dnssec
      • file - Serve zone data from an RFC 1035-style file
    • Running CoreDNS as a DNS Server in a Container
19. PostgreSQL Anonymizer 2024-05-23

    tags: database/postgresql, privacy/gdpr, programming/rust, security/anonymization

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    • dalibo/postgresql_anonymizer
    • Introducing PostgreSQL Anonymizer
    • 8 Anonymization Strategies with PostgreSQL
    • Data anonymization with Postgres
20. All you need is Wide Events, not "Metrics, Logs and Traces" 2024-04-19

    tags: database, distributed-system, observability, observability/logging, observability/metrics, observability/tracing

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    • Scuba: Diving into Data at Facebook - International Conference on Very Large Data Bases (VLDB) (PDF, Talk)
    • HN discussion
    • Axiom - Stop sampling, observe every event
      • Adaptive _time compression — A database hacker story
    • Eventrelay - An event streaming/storage system for the rest of us
    • Honeycomb - Identify Outliers
    • Rill - Fast operational dashboards that your team will actually use
    • Strangeloop 17 - Why We Built Our Own Distributed Column Store by Sam Stokes