private void bookManagerQryFailStatus(boolean proxyQry, String errMsg) {
        if (proxyQry) {
            fetchFailProxyMap.put(proxyQueryFailKey,
                    new Tuple2<>(new AtomicLong(System.currentTimeMillis()), errMsg));
        } else {
            fetchFailEncryptMap.put(encryptQueryFailKey,
                    new Tuple2<>(new AtomicLong(System.currentTimeMillis()), errMsg));
        }
    }
try to read cache of proxy entry

@return read result
inlong-sdk/dataproxy-sdk/src/main/java/org/apache/inlong/sdk/dataproxy/config/ProxyConfigManager.java