code: private void preloadDynamicCaches() {
          List<CacheService> dynamicCacheServices = CacheRegistry.getInstance().getDynamicCacheServices();
          for (CacheService dynamicCacheService : dynamicCacheServices) {
              if (dynamicCacheService instanceof PreloadableCache) {
                  try {
                      PreloadableCache preloadableCache = (PreloadableCache)dynamicCacheService;
                      RegisteredService regServ = preloadableCache.getClass().getAnnotation(RegisteredService.class);
                      Map<String,String> params = new HashMap<>();
                      Parameter[] parameters = regServ.parameters();
                      if (parameters != null) {
                          for (Parameter parameter : parameters) {
                              if (parameter.name().length() > 0)
                                  params.put(parameter.name(), parameter.value());
                          }
                      }
                      preloadableCache.initialize(params);
                      preloadableCache.loadCache();
                  }
                  catch (Exception ex) {
                      logger.severeException("Failed to preload " + dynamicCacheService.getClass(), ex);
                  }
              }
              synchronized(allCaches) {
                  allCaches.put(dynamicCacheService.getClass().getName(), dynamicCacheService);
              }
          }
      }
docs: Load caches registered as dynamic java services.