Benchmark BASH serialization

benchmark_serialization.sh

#!/usr/bin/env bash

declare -A output sample=(
    [id]="969AEF26-6D33-475A-982B-27EC880A2495"
    [name]="some_name"
    [prop]="property with spaces"
    [level]="lower"
    [production]="no"
    [env]="staging"
)

marshall_declare() {
    for i in {1..1000}; do
        local data=$(declare -p sample)
        eval "output=${data#*=}"
    done
}

marshall_native() {
    for i in {1..1000}; do
        eval "output=(${sample[*]@K})"
    done
}

echo >&2 Declare serialization
time marshall_declare

echo >&2 Native serialization
time marshall_native

# Declare serialization
# real  0m0.857s
# user  0m0.620s
# sys   0m0.281s

# Native serialization
# real  0m0.067s
# user  0m0.067s
# sys   0m0.000s