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Pavel Varyukhichev pvva

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pvva / gen-certs.sh
Created September 27, 2022 12:45 — forked from notmedia/gen-certs.sh
Creating Self-Signed certificates
rm *.pem
rm *.srl
rm *.cnf
# 1. Generate CA's private key and self-signed certificate
openssl req -x509 -newkey rsa:4096 -days 365 -nodes -keyout ca-key.pem -out ca-cert.pem -subj "/C=FR/ST=Occitanie/L=Toulouse/O=Test Org/OU=Test/CN=*.test/[email protected]"
echo "CA's self-signed certificate"
openssl x509 -in ca-cert.pem -noout -text
@pvva
pvva / go-os-arch.md
Created February 23, 2019 18:11 — forked from asukakenji/0-go-os-arch.md
Go (Golang) GOOS and GOARCH

Go (Golang) GOOS and GOARCH

All of the following information is based on go version go1.8.3 darwin/amd64.

A list of valid GOOS values

(Bold = supported by go out of the box, ie. without the help of a C compiler, etc.)

  • android
  • darwin
@pvva
pvva / latency.txt
Created December 6, 2018 21:14 — forked from jboner/latency.txt
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