BEGINNER ESSENTIAL
Cache
Stores reusable copies to reduce repeated work.
An everyday example
Keep a menu nearby while checking for updates.
See how these concepts connect
The frontend requests through an API; the backend applies rules and accesses data. Results return in the reverse direction.
Where this term is useful
These are related contexts, not prerequisites.
Back in the project
When it comes up: When organizing services, background work, and concurrent use.
What to do next: Compare versions and original data before deciding a stale copy is involved; avoid indiscriminate deletion.
Open the related method and stepsWhat can this analogy leave out?
Multiple services add coordination cost; serverless still uses servers and incurs charges.
Everyday examples explain roles and relationships; actual behavior follows the tool, language, or platform.