String cache_context = configurationService.getCacheContext();
directory = new File(configurationService.getHome() + File.separator + "ldcache");
try {
backend = new LDCachingFileBackend(directory);
sail = new GenericLinkedDataSail(parent, backend, new NotFilter<Resource>(cacheFilters), ldclientConfig);
return sail;
} catch (RepositoryException e) {
log.error("could not initialize LDCache file backend",e);
return null;