To use BookMyCab make sure you meet below requirements.
BACKEND Admin Panel
Recommended
VPS 4GB Ram 2 Cores ( up to 2000 Users)
VPS 8GB Ram 4 Cores ( up to 5000 Users)
Dedicated Server 4-8 Cores 16GB Ram ( unlimited users)
SSD Storage 100GB ( if you use Amazon S3 to store files.)
Storage 1 TB or as per your demand - 1 user utilise 10MB space a month and in 1 year 1 user need 200MB space.
Choose OS of your choice both are fast and secure Ubuntu / CentOS
Import Extensions with PHP7.x OpenSSL, PDO, Mbstring, Tokenizer, JSON, CURL, Symlink, mod-rewrite.
LAMP, Apache + PHP 7.1 + phpMyAdmin + MySQL + Redis =
ROOT Access of your machine.
Just Beginning
VPS with 1 GB Ram any Core + some space
Install LAMP with MySql, phpMyAdmin, PHP7.x OpenSSL, PDO, Mbstring, Tokenizer, JSON, CURL, Symlink, mod-rewrite.
Shell/Root Access to install composer.