Cache get/set examples for Drupal 7 and Drupal 8

drupal_cache_example.md

Drupal 7

Setting the cache

cache_set('cache_key_goes_here', 'cache_data_goes_here', 'cache', time() + 60);

Fetching the cache

$cache = cache_get('cache_key_goes_here');
if (!empty($cache->data) && time() < $cache->expire) {
  // Do something with $cache->data here.
}

---

Drupal 8

Setting the cache

\Drupal::cache()->set('cache_key_goes_here', 'cache_data_goes_here', time() + 60);

Fetching the cache

$cache = \Drupal::cache()->get('cache_key_goes_here');
if (!empty($cache->data) {
  // Do something with $cache->data here.
}

Note that in Drupal 8 you don't have to manually check to make sure the cache isn't expired, thanks to this issue.