add homepage

from flask import Blueprint, current_app

from helpers.limiter import limiter

healthcheck_bp = Blueprint('healthcheck', __name__)

@healthcheck_bp.route('/healthcheck', methods=['GET'])

@limiter.exempt

def healthcheck():

     # Get a connection from the pool

    with current_app.db_pool.connection() as conn:

        with conn.cursor() as cur:

            cur.execute("SELECT version();")

            version = cur.fetchone()[0]

    count = current_app.redis.incr('hits')

    current_app.redis.set("test_key", "Hello from Redis!")

    value = current_app.redis.get("test_key").decode('utf-8')

    return f"Hello World! I have been seen {count} times.<br>{value}<br>PostgreSQL version: {version}<br>redis://{current_app.config['REDIS_HOST']}:{current_app.config['REDIS_PORT']}"