Examples with SpringCacheProvider org.eclipse.hono.service.cache.SpringCacheProvider used on opensource projects

Example 1 with SpringCacheProvider

use of org.eclipse.hono.service.cache.SpringCacheProvider in project hono by eclipse.

the class AbstractAdapterConfig method newGuavaCache.

/**
 * Create a new cache provider based on Guava and Spring Cache.
 *
 * @param config The configuration to use as base for this cache.
 * @return A new cache provider or {@code null} if no cache should be used.
 */
private static final CacheProvider newGuavaCache(final RequestResponseClientConfigProperties config) {
    final int minCacheSize = config.getResponseCacheMinSize();
    final long maxCacheSize = config.getResponseCacheMaxSize();
    if (maxCacheSize <= 0) {
        return null;
    }
    final CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder().concurrencyLevel(1).initialCapacity(minCacheSize).maximumSize(Math.max(minCacheSize, maxCacheSize));
    final GuavaCacheManager manager = new GuavaCacheManager();
    manager.setAllowNullValues(false);
    manager.setCacheBuilder(builder);
    return new SpringCacheProvider(manager);
}