Why updates sometimes need a restart
Some updates replace files that a running process already loaded into memory. The old code can continue running until the process restarts, so the operating system schedules a…
Read the guide →DIGITAL GUIDE FOR MODERN LIFE
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Useful context for the moments when a setting, acronym or warning makes you stop and ask why.
How public-key encryption works
Public-key cryptography uses a related key pair. A public key can be shared; a private key must remain secret. One common use is to encrypt data for a…
Read the guide →Why two backups are better than one
A single backup can fail at the same time as the original through theft, fire, ransomware, account deletion or a simple storage error. Independent copies reduce the chance…
Read the guide →What an API does
An API is an agreed way for one program to request data or an action from another. It defines endpoints, inputs, outputs, authentication and error behavior. A mobile…
Read the guide →How email delivery works
Email moves through several systems. A sending client submits a message to a mail server, which looks up the recipient domain’s mail records and transfers the message to…
Read the guide →Why file formats matter
A file format describes how information is structured so another program can read it. Some formats are open and broadly documented; others depend on one application or vendor.…
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