Reliable / scalable Backend

Terms Ephemeral (efimeral) : short lived functions like google-cloud functions , that are running for per request and has a fixed timeout and at that timeout it sends a SIGTERM to close it. Presigned / Signed URL : Is used for upload / download directly to storage (w/o involving backend in this all), its a time based URL that expires with time, the generator of the link should have access and uploader can just upload … so this is used in Customer support as well , when we upload images of a damaged item, this is used to reduce load to backend and solve this ...

January 12, 2026 · 8 min · Mohit Dulani