Why We Add Elements to the Infrastructure: What Firewalls Are For: Why Traffic Served Over HTTPS: What Monitoring Is Used For: How Monitoring Collects Data: How to Monitor Web Server QPS: Issues with the Infrastructure: Terminating SSL at the Load Balancer Level: Having Only One MySQL Server Accepting Writes: Having Servers with the Same Components:

Why Adding More Components: Load Balancer Distribution Algorithm: Active-Active vs. Active-Passive: Primary-Replica (Master-Slave) Cluster: Difference between Primary and Replica: Issues with the Infrastructure: Single Point of Failure (SPOF): Security Issues: No Monitoring:

Server: A server is a computer or software system that stores and delivers data or services over a network. Domain Name: A domain name is a user-friendly address used to access resources on the internet, translated by the DNS. DNS Record for www: Usually, “www” in a domain like “www.foobar.com” is a CNAME record pointing…

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