So, for anonymous users, Drupal 8 already responds in constant (amortized) time. Benchmarkĭrupal 8’s Page Cache can respond in constant time. In other words: Dynamic Page Cache saves us less work, but in doing so, allows us to apply it in many more cases. This table also illustrates quite clearly the strengths and weaknesses of both: Page Cache is faster because it contains the final response, unlike Dynamic Page Cache which only contains a partial response, but thanks to that response not yet being personalized it can be used across users. The Dynamic Page Cache module caches the page just before those placeholders are replaced. These placeholders are only rendered at the very last moment. The Dynamic Page Cache module caches mostly rendered HTML responses - because it does not assume only a single variant exists: thanks to cache contexts, it knows the different variants that exist of each part of the page, and thus also of the final (fully assembled) page.ĭuring the rendering process, auto-placeholdering ensures that the parts of the page that are too dynamic to cache 3 or are simply uncacheable are replaced with placeholders. The innovation in 8 on top of 7’s Page Cache is the addition of cache tags, which allow one to use the Page Cache but still have instantaneous updates: no more stale content. The Page Cache module caches fully rendered HTML responses - it assumes only one variant of each response exists, which is only true for anonymous users 2. Exactly 5 months later, on September 8, the Dynamic Page Cache 1 module was added to Drupal 8, and also enabled by default. Since April 8, Drupal 8 had its Page Cache enabled by default. The Page Cache module only works for anonymous users, the Dynamic Page Cache module takes that a step further: it works for any user.
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