RTT

Thijs de Zoete

Round Trip Time: the time it takes a packet to travel to a specific destination and for for an acknowledgement of receipt of the package to travel back to the sender.

A Record

Thijs de Zoete

A record that translates a domain name to an IP address. In a phone analogy, this is the equivalent of looking up someone’s name in a phonebook and getting the phone number back.

Hostname

Thijs de Zoete

The nameĀ of a computer, server or another networked device like a router or switch. In a phone analogy comparable with a person’s or organisation’s name.

IP Address

Thijs de Zoete

The network address of a computer, server or another networked device like a router or switch. In a phone analogy somewhat comparable with a phone number.

PoP

Thijs de Zoete

Point of Presence

CDN

Thijs de Zoete

Content Delivery Network: a network of geographically dispersed servers. Each node (also known as an edge server) caches content for end-users to download, and as these nodes are closer to the end-user than the Origin tends to be, latency and download time are reduced.

Origin shield

Thijs de Zoete

A protective layer in front of the original location of content. This is often part of the existing infrastructure of a CDN provider The difference is that other PoPs will request content from the origin shield instead of the origin thus relieving the pressure on the origin.

Micro-outage

Thijs de Zoete

We distinguish between full-blown outages where the service is completely unavailable, and micro-outages that are of a different nature. Micro-outages generally last a short amount of time, are confined to a specific region or ISP and often go unnoticed by regular monitoring setups. The impact of a micro-outage can range from performance degradation to partial unavailability, or even complete unavailability … Read More