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Glossary

Here is a glossary explaining the key concepts behind centron and S3 Object Storage, to give you a better understanding of how centron and S3 Object Storage work and what certain terms mean in the documentation:

Access Key​

Random tokens that act as a username to grant access to a centron S3 Object Storage bucket.

Access-Control-Allow-Credentials​

A header which, when set to "true", instructs browsers to make the response accessible to front-end JavaScript code.

Access-Control-Allow-Methods​

A header that permits one or more HTTP methods to access a resource in response to a preflight request.

Access-Control-Allow-Origin​

A header that specifies whether the response will be shared with the requesting code.

Access-Control-Expose-Headers​

A header that allows a server to indicate which response headers are available to scripts running in browsers.

Access-Control-Max-Age​

A header that specifies how long the results of a preflight request are cached.

Bucket​

A publicly accessible cloud storage resource or container that stores objects or data.

CDN (Content Delivery Network)​

A geographically distributed network of servers that delivers static content to users.

CDN cache​

A CDN cache stores content such as images, videos or web pages on a proxy server located closer to the end users.

CDN endpoint​

A starting or destination point connected to the internet that receives communications and content between multiple servers.

CNAME record​

CNAME records (also known as canonical name records) associate an alias with a canonical domain name.

CORS (Cross-Origin Resource Sharing)​

A mechanism that allows resources to be loaded from other origins (e.g. a domain, a protocol or a port) via HTTP headers.

High Availability (HA)​

An approach to infrastructure design that aims to reduce downtime and eliminate single points of failure.

Key​

A unique data key for objects in a bucket.

Pre-signed URL​

A connection URL that has already been authorised.

RESTful API​

An approach to creating APIs based on a set of architectural constraints that make them faster, simpler and more standardised.

S3-compatible object storage​

A storage solution that uses the S3 API.

Secret Key​

Private, random tokens that act as a password to grant access to a centron S3 Object Storage bucket.

SSL certificate​

A digital document that verifies the identity of a website.

TTL (Time to Live)​

The lifetime (or hop limit) of data in a network, limited by a time constraint.

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