Phil Sturgeon

The X-Forwarded-For (XFF) HTTP header provides crucial insight into the origin of web requests. The header works as a mechanism for conveying the original source IP addresses of clients, and not just across one hop, but through chains of multiple intermediaries. This list of IPv4 and IPv6 addresses is helpful to understand where requests have really come from in scenarios where they traverse several servers, proxies, or load balancers.

Dale Vince is the owner of Ecotricity, which claims to be “Britain’s greenest energy supplier”, selling renewable electricity and greenwashed fossil gas. Dale has fallen out with swathes of the climate community lately by campaigning against the Greens in their main target seats, even Bristol, suggesting “the only party that can form a green government” was Labour, with many suggesting this was part of a larger effort to get into the House of Lords.

Idempotency is when doing an operation multiple times is guaranteed to have the same effect as doing it just once. When working with APIs this is exceptionally helpful on slow or unreliable internet connections, or when dealing with particularly sensitive actions such as payments, because it makes retrying operations safe and reliable.