VirtualTam's bookmarks

21. OpenResty - a dynamic web platform based on NGINX and LuaJIT 2018-07-17

    tags: network/http, network/http-server/nginx, performance, programming/api, programming/lua, server

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    • https://openresty.org/en/linux-packages.html
    • https://opm.openresty.org/
    • https://github.com/openresty
    • https://github.com/openresty/openresty
    • https://www.reddit.com/r/lua/comments/209l92/openresty_with_others_language/
    • https://www.reddit.com/r/devops/comments/6tv1yc/dynamic_layer_4_load_balancing/
22. tmuxp — Load tmux sessions via json and YAML 2018-04-06

    tags: command-line, command-line/tmux, session, terminal

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    • https://github.com/tmux-python/tmuxp
23. FlameScope: a visualization tool for exploring different time ranges as Flame Graphs. 2018-04-05

    tags: hardware/cpu, load, memory, observability/tracing, performance, stack, system

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    • https://medium.com/@NetflixTechBlog/netflix-flamescope-a57ca19d47bb
    • https://medium.com/netflix-techblog/java-in-flames-e763b3d32166
24. htop - an interactive process viewer for Unix 2018-02-05

    tags: bsd, command-line, hardware/cpu, linux, load, memory, process, system, unix

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25. Locust - A modern load testing framework 2018-01-29

    tags: load, network/http, performance, programming/python, programming/testing, web

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    • https://github.com/locustio/locust
    • https://fosdem.org/2018/schedule/event/loadtesting_locust/
26. molotov — Molotov 1.4 documentation 2018-01-29

    tags: load, network/http, programming/python, programming/testing, web

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    • https://github.com/loads/molotov/
    • https://fosdem.org/2018/schedule/event/molotov/
27. Distributed environments and database migrations 2017-11-29

    tags: data, database, database/migration, distributed, framework/django, linux/container/docker

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    Actors:

    • database server / cluster
    • load-balanced application servers relying on a database schema with migrations
    • reverse proxy

    Issue:

    • managing database schema migrations

    Possible sequence:

    • create the database
    • run a service that executes database schema migrations
    • start application servers
    • start the load-balancer / reverse-proxy

    Resources:

    • https://www.reddit.com/r/docker/comments/2t2pnf/what_are_best_strategies_to_migrate_relational/
    • https://softwareengineering.stackexchange.com/questions/357929/db-migration-strategy-for-docker-containers-in-aws-ecs
    • https://stackoverflow.com/questions/41592091/run-a-database-migration-command-when-deploying-a-docker-container-to-aws
    • https://ltd-keeper.lsst.io/gke-migrations.html
    • https://stackoverflow.com/questions/31715239/docker-compose-database-migrations-and-other-pre-post-scripts
    • https://stackoverflow.com/questions/38089999/docker-compose-rails-best-practice-to-migrate
    • https://stackoverflow.com/questions/37058812/how-best-to-run-one-off-migration-tasks-in-a-kubernetes-cluster
28. loading - Reload configurations without restarting Emacs - Stack Overflow 2017-06-13

    tags: editor, editor/emacs, linux, programming/lisp, reload, text

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29. One line of code cut our Flask page load times by 60% 2017-05-12

    tags: framework/flask, jinja, programming/python, template, web

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30. Efficient SMTP relay infrastructure with Postfix and load-balancers | HAProxy Technologies Blog 2017-04-25

    tags: email, email/postfix, load-balancing, network/http-server/haproxy, network/smtp, network/tcp

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31. Lenovo Thinkpad 13 + Linux - Feedback 2017-04-15

    tags: fan, hardware, hardware/cpu, heat, laptop, lenovo, linux, noise

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    +++: backlit keyboard, battery ++: HDPI matte screen, touchpad+trackpad -: BIOS messages in approximative English --: no ethernet port ---: cooling / fan noise

    ETH available through:

    • 10$ generic USB-C adapter
    • 25$ Lenovo USB-C adapter
    • 150$ Lenovo USB-C dock
    • 180$ Lenovo docking station

    Cooling / fan control:

    • triggered when the CPU reaches approx. 46° / 20% load
    • slowest speed: 3400 RPM (!), goes up to 4000+ RPM

    TODO:

    • try updating BIOS/UEFI
    • use a laptop cooling pad
    • killall -9 firefox # not really an option tho

    User-contributed feedback:

    • https://www.reddit.com/r/thinkpad/comments/4k2kzl/debian_on_the_thinkpad_13/
    • https://www.reddit.com/r/thinkpad/comments/4jh3wb/thinkpad_13_manjaroarch_impressions/
    • https://www.reddit.com/r/thinkpad/comments/4lzsks/my_thinkpad_13_experience_with_ubuntu_1604/
    • https://www.reddit.com/r/thinkpad/comments/4pieti/thinkpad_13_fan_vs_zenbook/
32. Configure HAProxy to Load Balance Sites With SSL 2017-04-04

    tags: network, network/http, network/http-server/haproxy, network/proxy, network/tcp, network/transport-layer-security

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33. Overview — HATop: Interactive ncurses client for HAProxy 2017-02-17

    tags: command-line, linux, load, network/http-server/haproxy, observability

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    https://github.com/feurix/hatop

34. Træfɪk - HTTP reverse proxy and load balancer made to deploy microservices with ease 2017-01-09

    tags: etcd, linux/container, linux/container/docker, network/http, network/reverse-proxy, sysadmin

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35. Howto write apache ProxyPass* rules in HAProxy | HAProxy Technologies – Aloha Load Balancer 2016-12-06

    tags: content, network/http-server/haproxy, network/reverse-proxy, network/url, response, rewrite, sysadmin

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36. Building a Shop with Sub-Second Page Loads: Lessons Learned 2016-10-24

    tags: load-balancing, memory/cache, network, performance, web

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37. Audacity themes 2016-08-30

    tags: audio, digital-audio-workstation, digital-audio-workstation/audacity, editor, linux, theme

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    To enable theming, append the following section to ~/.audacity-data/audacity.cfg

    [Theme] LoadAtStart=1

    This will load any theme resource located under ~/.audacity-data/Theme/ImageCache.png

    Some themes:

    • http://jcsu.jesus.cam.ac.uk/%7Ehdc21/design/audacity/
    • https://plus.google.com/116122832815172073583/posts/c3Gk8SNhjin (unfold comment thread)
    • https://github.com/cisoun/audacity-themes
    • https://www.fosshub.com/DarkAudacity.html - via http://www.darkaudacity.com/
38. Proxmox VE Bug 839 – LXC containers show host /proc limits instead of actual limits available 2016-08-09

    tags: hardware/cpu, linux, linux/container, linux/container/lxc, observability, resource, virtualization/proxmox

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    via https://forum.proxmox.com/threads/lxc-container-show-load-and-hardware-from-host.26051/ rel https://github.com/lxc/lxcfs/issues/88

39. Literate DevOps 2016-03-29

    tags: babel, development, devops, documentation, editor/emacs, literate, mode, org, sysadmin

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    """ Instead of opening up a terminal to my virtual machine, I pop into Emacs and load this sprint’s /note file/1, create a new header, and enter the shell and ruby commands in this text file.

    What good is this? Unlike a traditional terminal, this allows me to log, document and execute each command.

    As an old bear with very little brains, my prose can explain the background and purpose of each command. Clicking the hyperlink refreshes my memory of previous discoveries. A keychord executes the code block… """

40. PulseAudio Modules 2015-01-08

    tags: audio, linux, modules, pulseaudio

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    Tweak which modules are loaded in either: /etc/pulse/default.pa ~/.config/pulse/default.pa