public boolean flushall() {
String result = "";
Jedis jedis = null;
try {
jedis = this.jedisPool.getResource();
result = jedis.flushAll();
LOG.info("redis client name: " + this.getCacheName() + " flushall.");
} catch (Exception e) {
LOG.error(e.getMessage(), e);
this.jedisPool.returnBrokenResource(jedis);