How to use org.apache.shindig.common.cache

DefaultInvalidationService(HttpCache httpCache, CacheProvider cacheProvider, AtomicLong marker) {
 this.httpCache = httpCache;
 invalidationEntries = cacheProvider.createCache(CACHE_NAME);
 this.marker = marker;
}

 @Override
 protected HttpResponse removeResponseImpl(String key) {
  return cache.removeElement(key);
 }
}

 @Override
 protected synchronized boolean removeEldestEntry(Map.Entry<K, V> eldest) {
  return size() > capacity;
 }
}

private SoftExpiringCache<String, String> makeSoftExpiringCache() {
 SoftExpiringCache<String, String> expiringCache = new SoftExpiringCache<String, String>(cache);
 expiringCache.setTimeSource(timeSource);
 return expiringCache;
}

 @Test
 public void testMissingValue() {
  SoftExpiringCache<String, String> expiringCache = makeSoftExpiringCache();
  assertNull(expiringCache.getElement("not set"));
 }
}

@Override
protected void addResponseImpl(String key, HttpResponse response) {
 cache.addElement(key, response);
}

 private boolean shouldCache() {
  return parsedCssCache != null && parsedCssCache.getCapacity() != 0;
 }
}

private SoftExpiringCache<String, String> makeSoftExpiringCache() {
 SoftExpiringCache<String, String> expiringCache = new SoftExpiringCache<String, String>(cache);
 expiringCache.setTimeSource(timeSource);
 return expiringCache;
}

 @Test
 public void testMissingValue() {
  SoftExpiringCache<String, String> expiringCache = makeSoftExpiringCache();
  assertNull(expiringCache.getElement("not set"));
 }
}

DefaultInvalidationService(HttpCache httpCache, CacheProvider cacheProvider, AtomicLong marker) {
 this.httpCache = httpCache;
 invalidationEntries = cacheProvider.createCache(CACHE_NAME);
 this.marker = marker;
}

 @Override
 protected synchronized boolean removeEldestEntry(Map.Entry<K, V> eldest) {
  return size() > capacity;
 }
}

 @Override
 protected HttpResponse removeResponseImpl(String key) {
  return cache.removeElement(key);
 }
}

private SoftExpiringCache<String, String> makeSoftExpiringCache() {
 SoftExpiringCache<String, String> expiringCache = new SoftExpiringCache<String, String>(cache);
 expiringCache.setTimeSource(timeSource);
 return expiringCache;
}

 @Test
 public void testMissingValue() {
  SoftExpiringCache<String, String> expiringCache = makeSoftExpiringCache();
  assertNull(expiringCache.getElement("not set"));
 }
}

DefaultInvalidationService(HttpCache httpCache, CacheProvider cacheProvider, AtomicLong marker) {
 this.httpCache = httpCache;
 invalidationEntries = cacheProvider.createCache(CACHE_NAME);
 this.marker = marker;
}

 @Override
 protected synchronized boolean removeEldestEntry(Map.Entry<K, V> eldest) {
  return size() > capacity;
 }
}

 @Override
 protected void removeResponseImpl(String key) {
  cache.removeElement(key);
 }
}

private SoftExpiringCache<String, String> makeSoftExpiringCache() {
 SoftExpiringCache<String, String> expiringCache = new SoftExpiringCache<String, String>(cache);
 expiringCache.setTimeSource(timeSource);
 return expiringCache;
}

private LruCache<Object, Object> getCache(CacheProvider provider, String name) {
 Cache<Object, Object> base = provider.createCache(name);
 return (LruCache<Object, Object>)base;
}

 @Override
 protected synchronized boolean removeEldestEntry(Map.Entry<K, V> eldest) {
  return size() > capacity;
 }
}