VirtualTam's bookmarks

1. Steam Audio - A full-featured audio solution that integrates environment and listener simulation 2024-04-02

   tags: audio, engine/fmod, engine/unity, engine/unreal, game/steam, programming/c++, virtual-reality

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   • Steam Audio Open Source Release
   • ValveSoftware/steam-audio
2. The One Billion Row Challenge 2024-02-22

   tags: concurrency, database, jvm, performance/benchmark, performance/profiling, programming/java

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   • gunnarmorling/1brc
   • The Billion Row Challenge (1BRC) - Step-by-step from 71s to 1.7s
   • The One Billion Row Challenge in Go: from 1m45s to 4s in nine solutions
   • One Billion Rows Challenge in Golang
3. The XY Problem 2023-08-25

   tags: discussion, forum, information, question

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   The XY problem is asking about your attempted solution rather than your actual problem. This leads to enormous amounts of wasted time and energy, both on the part of people asking for help, and on the part of those providing help.

   • https://meta.stackexchange.com/questions/66377/what-is-the-xy-problem
   • https://www.perlmonks.org/?node=XY+Problem
   • http://mywiki.wooledge.org/XyProblem
4. FusionDirectory — a solution to daily management of data stored in an LDAP directory 2021-01-20

   tags: linux/container/docker, network/ldap, security/authentication, security/authorization

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   • https://github.com/tiredofit/docker-fusiondirectory
   • https://hub.docker.com/r/tiredofit/fusiondirectory
5. IoT logging with MQTT, Fluentd / Fluent Bit and Loki 2020-08-15

   tags: embedded, fluentd, internet-of-things, network/mqtt, observability/grafana, observability/logging, observability/logging/grafana-loki

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   Open questions, potential solutions or workarounds:

   • Loki does not support out-of-order message ingestion
     • https://github.com/grafana/loki/issues/1544
     • https://github.com/project-hatohol/fluent-plugin-sort
   • There is not Java client for Loki
     • https://github.com/grafana/loki/issues/1158
     • https://grafana.com/docs/loki/latest/api/
     • https://github.com/grafana/loki/tree/master/cmd/fluent-bit
   • The Wiced MQTT queue might be limited depending on the volume of logs
     • https://iotexpert.com/2017/03/08/embedded-world-2017-wiced-wifi-mqtt-and-the-amazon-iot-cloud/
6. Terragen – a powerful solution for building, rendering, and animating realistic natural environments 2020-01-21

   tags: generation, graphics/2d, graphics/3d, image, render

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   • https://en.wikipedia.org/wiki/Terragen
   • https://planetside.co.uk/wiki/
7. Jenkins Pipeline and Google Cloud Registry 2018-09-20

   tags: cloud/gcp, continuous-integration/jenkins, linux/container/docker, linux/container/kubernetes, pipeline, registry, security/authentication, security/token

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   • https://medium.com/google-cloud/how-to-push-docker-image-to-google-container-registry-gcr-through-jenkins-job-52b9d5ce9f7f
   • https://cloud.google.com/solutions/using-jenkins-for-distributed-builds-on-compute-engine
   • https://codeascraft.com/2018/06/05/deploying-to-google-kubernetes-engine/
8. Docker - Command output formatting 2018-06-18

   tags: command-line, linux/container/docker, programming/shell

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   • https://docs.docker.com/engine/reference/commandline/ps/
   • https://www.katacoda.com/courses/docker/formatting-ps-output
   • https://container42.com/2016/03/27/docker-quicktip-7-psformat/
   • https://golang.org/pkg/text/template/
   • https://container-solutions.com/docker-inspect-template-magic/
9. This is strictly a violation of the TCP specification 2017-12-21

   tags: linux, network, network/http, network/proxy, network/socket, strace

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   • https://support.cloudflare.com/hc/en-us/articles/200171906-Error-522-Connection-timed-out
   • https://access.redhat.com/solutions/437133
   • https://benohead.com/tcp-about-fin_wait_2-time_wait-and-close_wait/
   • https://github.com/cloudflare/cloudflare-blog/blob/master/2016-08-time-out/listener.go
10. Ansible: How to delete files and folders inside a directory? - Stack Overflow 2017-08-25

    tags: configuration-management/ansible, delete, directory, file

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    See answer https://stackoverflow.com/a/41837196 for an elegant solution using the file module

11. Integrate Spamassassin as antispam solution between postfix and dovecot on Debian 8 Jessie · Christian Roessler 2016-10-22

    tags: bayesian, email, email/dovecot, email/milter, email/postfix, email/spam, filter, linux, linux/debian, sysadmin

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12. Open Sourcing a Deep Learning Solution for... | Yahoo Engineering 2016-10-03

    tags: classification, deep-learning, image, neural-network, nsfw

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    code https://github.com/yahoo/open_nsfw/ via http://linuxfr.org/users/nedflanders/journaux/deep-nsfw-dreams gallery https://open_nsfw.gitlab.io/

13. Python unit testing frameworks: Nose, Pytest 2015-02-13

    tags: code, coverage, feature, nose, programming/python, programming/python/pytest, programming/testing, quality, unit

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    Python's built-in unittest module is quite cool, but a bit limited and way too verbose (read: it's quite not easy to incite developers to write unit tests)

    I'm currently looking for more dev-friendly solutions, the key points being:

    • writing test code should be easy and straight-forward -keep the focus on "what to test" instead of "how to transcribe a process to a test"
    • parallelization! -we, spoiled developers, should make good use of our way-too-many-cores build machines...
    • complete feature set!
      • we don't want to just run tests...
      • coverage reports (find dead/weak/untested code sections)
      • output formatting (JUnit-XML seems to be quite a common format out there)

    There seem to be 3 solutions in Python:

    • stock unittest + project-dependent customizations / test helpers
    • nosetests
    • py.test

    And 2 ways of gettings things done:

    • keeping things stock: no external dependency, project-specific implementation...
    • using a test framework: one more module in your (test) virtualenv, more concise tests, more features (// run, code coverage, etc.)

    Some links:

    • http://stackoverflow.com/questions/22856638/nose-vs-pytest-what-are-the-subjective-differences-that-should-make-me-pick
    • http://helixyte.org/2014/04/unit-testing-adventures-moving-from-nose-to-pytest/
    • http://lists.idyll.org/pipermail/testing-in-python/2013-August/005624.html
14. Community — SaltStack 2014-05-15

    tags: admin, configuration-management/saltstack, development, installation, network/ssh, programming/python, server, stack, sysadmin

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    Infrastructure management solution

15. xkcd: Wisdom of the Ancients 2014-04-23

    tags: comics, denver, development, forum, headache, night, overflow, solution, stack, xkcd

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