馃挕 Essentially keep every operation in memory!
- Modern CPU, high memory bandwidth as WordPress is mainly memory copying, sub-msec disk access time, use UpCloud
- Thin virtualization layer, use UpCloud, stay away from popular, not enterprise ready providers
- Fast operating system: No systemd, Enough entropy, IRQ balance, Low memory usage
- Block hammering attackers: Fail2ban, permanently block hostile networks
- Anycast DNS
- Quick webserver: Apache with Event MPM
- Parallel connection CDN with RAM-like speeds (Amazon CloudFront)
- High speed SSL: ECDSA certificate, Entropy source, TLS1.2, Ciphersuites for AES-NI, SSL session cache, OCSP stapling, HTTP/2
- Modern PHP with OPcache, FastCGI connected through UDS
- Lean WordPress installation: minimal and audited plugins only
- Redis in-memory object cache
- InnoDB MariaDB engine
- Static resource optimization
- Cut on JavaScripts and stylesheets
- Continuous monitoring (Monit, HetrixTools, Bugsnag)