A bash script that utilizes Redis MONITOR to count its command execution at defined interval ⌚

redis_monitor_command_counter.sh

#!/bin/bash

# Redis connecting string, interval, command to monitor from CLI
REDIS_CONN=$1
INTERVAL=$2
COMMAND=$3

if [ -z "$REDIS_CONN" ] || [ -z "$INTERVAL" ]; then
    echo "Usage: $0 <REDIS_COMMAND> <INTERVAL> <COMMAND_TO_MONITOR>"
    echo "Example: $0 'redis-cli -h localhost -p 6379' 10 publish"
    exit 1
fi

echo "Monitoring Redis $COMMAND commands..."
echo "Redis connection: $REDIS_CONN"
echo "Reporting every ${INTERVAL} seconds"
echo "Press Ctrl+C to stop"
echo ""

total_count=0
interval_count=0
last_report=$(date +%s)

cleanup() {
    echo "Monitoring stopped."
    exit 0
}
trap cleanup INT

# Start to monitor and count commands
$REDIS_CONN monitor | grep -i $COMMAND | while read line; do
    total_count=$((total_count + 1))
    interval_count=$((interval_count + 1))
    current_time=$(date +%s)
    
    # Logging status every interval
    if [ $((current_time - last_report)) -ge $INTERVAL ]; then
        echo "$(date '+%H:%M:%S'): $interval_count $COMMAND commands in last ${INTERVAL}s (Total: $total_count)"
        interval_count=0
        last_report=$current_time
    fi
done

cleanup