Over 100 db writes per second… what's going on?

Hi,

Something is writing to my database over 100 times per second and I can’t figure out what it is.
It seems to correlate with traffic (averaging 7,000 pageviews per day so not massive). I thought it could be logs but i turned all logging off but saw no change.

Has anyone experienced this or have any idea what might be causing it? Is it cache??

Any help would be much appreciated,
Thanks.

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