From the NordicCDN blog
Performance, caching, security and the craft of running a fast website or webshop.
How to put a CDN in front of your custom domain, step by step
Putting a CDN in front of your own domain is a short checklist and about four places people trip up. Here is the whole thing in order, including how to undo it.
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Flash sales and ticket drops: handling 10× traffic gracefully
A flash sale is a traffic spike with a stopwatch on it — and a second problem most scaling advice ignores entirely: there is only so much stock, and everyone wants it at the same instant.
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Surviving a traffic spike: how a waiting room keeps your site alive
Sometimes demand simply exceeds what your site can handle — a product drop, a viral moment, a ticket release. A waiting room is the difference between a queue and a crash.
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PrestaShop performance: caching a dynamic shop the right way
PrestaShop gives you a serious shop out of the box, and a serious amount of work per page to go with it. How to make it fast without breaking the dynamic bits.
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Black Friday readiness: making your shop survive the spike
Your shop runs fine for 364 days a year. Then Black Friday arrives, traffic goes 20x, and the wheels come off at the worst possible moment. Here is the timeline that prevents it.
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How to speed up a slow WordPress site (without a single plugin)
WordPress out of the box is slow for boring, fixable reasons. Here is the order to fix them in — highest impact first — by moving work to the edge rather than stacking more plugins on top.
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Translate your entire website in a few clicks
Going multilingual used to mean plugins, exported strings and a translation-agency invoice. Here is how to put your whole site in another language at the edge — and the three things that will bite you if you skip them.
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