Ongoing image service testing, and maintenance mode at 10:40

Hi — well one thing we’ve learned already is that whilst the cache is building, the load is *incredible*!
We’re noticing a lot of 503 errors with images, and this is because of the sheer load on the server as images are created.
Once the images have been created, they are cached, and are served quickly.
This suggests, amongst other things, that we may want to look into ramping performance up when building the cache from cold.
We’re going to let the site run for another half hour to see if load levels off, and then go back into maintenance mode (at 10:40) and put it back to our current image service.
Thanks again for bearing with us whilst we test this.

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