Session isolation in Headless Chrome

[Sami Kyostila]

(bcc: platform-architecture-dev@)

For efficiency reasons we want to be able to run several parallel sessions in the same headless browser instance. However these sessions should be isolated to avoid accidental cross-talk (e.g., two sessions might want to load the same URL but use different cookies).

I've put together a design doc about our current thinking around this:

https://docs.google.com/document/d/1XAKvrxtSEoe65vNghSWC5S3kJ--z2Zpt2UWW1Fi8GiM/edit?pref=2&pli=1#

All comments welcome!

- Sami

[Giang Nguyen]

👍

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[Kentaro Hara]

The option 3 looks like a reasonable way to go.

If you observe big memory regressions, you can try low-RAM mode. Low-RAM mode is slower but consumes much less memory. For example, CC tends to use a ton of memory for performance in non-low-RAM mode but CC extremely throttles the memory in low-RAM mode. At the very least, we can say:

- if you still observe big memory regressions on low-RAM mode, it means that we should give up the option 3.

- if low-RAM mode gives you acceptable memory usages, it means that there is a solution for the option 3.

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Kentaro Hara, Tokyo, Japan