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@bruce-willis
bruce-willis / yunohost-oracle-free-tier.md
Last active May 9, 2024 15:39
How to setup YunoHost at Oracle free tier VM
  1. Register for Oracle Cloud Free Tier
  2. Create compute instance
    • change image to Canonical Ubuntu
    • confirm that a public IPv4 address is assigned
    • upload your public ssh key
    • leave everything blank in Boot volume
  3. Enable Internet Access
    • Instances → Instance details → Subnet → Default Security List → Add Ingress Rules
    • HTTP: Stateless: Checked
@antirez
antirez / meltdown_redis.md
Last active February 3, 2021 14:08

Meltdown fix impact on Redis performances in virtualized environments

UPDATE: apparently kernel difference may have a serious impact, so I'll redo the test from scratch.

Test performed with AOF enabled, fsync policy 1 second, allowing the rewrites to be triggered.

Command lines used:

@troyfontaine
troyfontaine / 1-setup.md
Last active May 9, 2024 15:16
Signing your Git Commits on MacOS

Methods of Signing Git Commits on MacOS

Last updated March 13, 2024

This Gist explains how to sign commits using gpg in a step-by-step fashion. Previously, krypt.co was heavily mentioned, but I've only recently learned they were acquired by Akamai and no longer update their previous free products. Those mentions have been removed.

Additionally, 1Password now supports signing Git commits with SSH keys and makes it pretty easy-plus you can easily configure Git Tower to use it for both signing and ssh.

For using a GUI-based GIT tool such as Tower or Github Desktop, follow the steps here for signing your commits with GPG.

@dmitshur
dmitshur / gist:6927554
Last active September 17, 2023 07:35
[Legacy GOPATH mode] How to `go get` private repos using SSH key auth instead of password auth.

WARNING: This gist was created in 2013 and targets the legacy GOPATH mode. If you're reading this in 2021 or later, you're likely better served by reading https://tip.golang.org/cmd/go/#hdr-Configuration_for_downloading_non_public_code and https://golang.org/ref/mod#private-modules.

$ ssh -A vm
$ git config --global url."git@github.com:".insteadOf "https://github.com/"
$ cat ~/.gitconfig
[url "git@github.com:"]
	insteadOf = https://github.com/
$ go get github.com/private/repo && echo Success!
Success!
@jboner
jboner / latency.txt
Last active May 10, 2024 14:27
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD