Process

You might say

The image worker crashes and takes down the whole site. Put that work in a separate process and verify the web service stays available.

A process is a running program together with the separate resource environment assigned by the operating system.A web server and image worker can run as separate processes with different process IDs and isolated memory. If the image worker crashes, it can restart independently while the web process keeps serving. A process is neither a program file nor a whole machine; one machine can run many processes.

Know first

Backend

PID

How separate processes isolate an image-worker failure

Server process monitorPID 410 · web

Web serverhandles requests and images

memory1.8 GB shared workload

image jobcrash stops server

EvidenceAll work runs under one PID

One unhandled crash exits the whole runtime.

How a process boundary changes failure scope

Problem and key mechanism: When web requests and image work share one process, an image-worker crash can stop the site; send image jobs to a separate process through a queue or pipe so the OS manages resources and exit states separately and the failure returns to job status.

Verify the failure boundary: Crash the image process and confirm the web process still responds while the job fails or retries. Communication and durable state still need design.

Code editors also separate processes: A code editor can run its language analyzer in a separate process. If the analyzer crashes, the editor can still save files and restart only the analyzer.

You can say this to an AI Agent

Move image processing into a separate process that receives work through a queue or pipe. Record the web and image PIDs, memory, and exit states. Crash the image process and verify web requests still work while the image job becomes visibly failed or retryable.

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Image work uses lots of memory and sometimes crashes inside the web process. Which change creates process isolation?

A. Run image work in a separate process and record both PIDs and exit statesB. Move image code to another function but call it in the same processC. Rename the same process image-service while it still handles web requests