ftamhar

// haversin(θ) function
func hsin(theta float64) float64 {
	return math.Pow(math.Sin(theta/2), 2)
}

// Distance function returns the distance (in meters) between two points of
//     a given longitude and latitude relatively accurately (using a spherical
//     approximation of the Earth) through the Haversin Distance Formula for
//     great arc distance on a sphere with accuracy for small distances
//

ftamhar

go test -run=. -bench=. -benchtime=5s -count 5 -benchmem -cpuprofile=cpu.out -memprofile=mem.out -trace=trace.out ./package | tee bench.txt
go tool pprof -http :8080 cpu.out
go tool pprof -http :8081 mem.out
go tool trace trace.out

go tool pprof $FILENAME.test cpu.out
# (pprof) list <func name>

# go get -u golang.org/x/perf/cmd/benchstat
benchstat bench.txt

ftamhar

• Based on https://gist.github.com/GAS85/990b46a3a9c2a16c0ece4e48ebce7300
• This totorial is for an older Ubuntu 18.04, for a Ubuntu 20.04 please read here --> https://gist.github.com/GAS85/38eb5954a27d64ae9ac17d01bfe9898c

Requirements

• A self-managed VPS or dedicated server with Ubuntu 18.04 running Apache 2.4.xx.
• A registered domain name with working HTTPS (TLS/SSL). HTTP/2 only works alongside HTTPS because most browsers, including Firefox and Chrome, don’t support HTTP/2 in cleartext (non-TLS) mode.

Step 1: Install Apache2

ftamhar

pg_restore --clean --no-acl --no-owner -d <database> -U <user> <filename.dump>