//
// Providing 0 TTL turns expiring off.
//
// Delete expired entries every 1/100th of ttl value. Goroutine which deletes expired entries runs indefinitely.
func NewLRU[K comparable, V any](size int, onEvict EvictCallback[K, V], ttl time.Duration) *LRU[K, V] {
	if size < 0 {
		size = 0
	}
	if ttl <= 0 {
		ttl = noEvictionTTL
	}

	res := LRU[K, V]{
		ttl:       ttl,
		size:      size,

        // Default constructor
    }

    static class CacheEntry {
        long expiration;
        HashMap map;

        CacheEntry(long ttl) {
            if (ttl == 0) {
                ttl = Dfs.TTL;
            }
            expiration = System.currentTimeMillis() + ttl * 1000L;
            map = new HashMap();
        }
    }

    static LogStream log = LogStream.getInstance();

        packet.recordClass = NameServicePacket.IN;
        packet.ttl = 100;
        packet.rDataLength = 0; // Will be set by writeRDataWireFormat

        // TestNameServicePacket.writeRDataWireFormat returns 0
        int written = packet.writeResourceRecordWireFormat(dst, 0);
        assertEquals(12, written); // 2 (pointer) + 2 (type) + 2 (class) + 4 (ttl) + 2 (rDataLength) + 0 (rData)

        assertThrows(IllegalStateException.class, () -> closedAuth.getPasswordAsCharArray());
    }

    /**
     * Test authentication TTL (Time To Live)
     */
    @Test
    @DisplayName("Test authentication TTL expiration")
    public void testAuthenticationTTL() throws InterruptedException {
        NtlmPasswordAuthenticator auth = new NtlmPasswordAuthenticator("user", "TTLTestPass123!");

            int ttl = testCase[2];

            ByteBuffer bb = ByteBuffer.wrap(testBuffer).order(ByteOrder.LITTLE_ENDIAN);

            bb.putShort((short) 3);
            bb.putShort((short) 34);
            bb.putShort((short) serverType);
            bb.putShort((short) 0);
            bb.putShort((short) proximity);
            bb.putShort((short) ttl);
            bb.putShort((short) 0);

                + recordTypeString + ",recordClass=" + (recordClass == IN ? "IN" : "0x" + Hexdump.toHexString(recordClass, 4)) + ",ttl="
                + ttl + ",rDataLength=" + rDataLength);
    }

                + this.link + ",path=" + this.path + ",ttl=" + this.ttl + ",expiration=" + this.expiration + ",remain="
                + (this.expiration - System.currentTimeMillis()) + "]";
    }

    /**
     * Get the time to live for this referral
     *
     * @return the ttl
     */
    public long getTtl() {
        return this.ttl;
    }

    /**
     * {@inheritDoc}
     *

    /**
     * Sends a heartbeat document to OpenSearch to indicate this instance is active.
     */
    public void sendHeartbeat() {
        final long now = System.currentTimeMillis();
        final long ttl = ComponentUtil.getFessConfig().getCoordinatorHeartbeatTtlAsInteger().longValue();
        final String hostname = ComponentUtil.getSystemHelper().getHostname();

                + ",recordType=" + recordTypeString + ",recordClass="
                + (this.recordClass == IN ? "IN" : "0x" + Hexdump.toHexString(this.recordClass, 4)) + ",ttl=" + this.ttl + ",rDataLength="
                + this.rDataLength);
    }

        CacheEntry(final long ttl) {
            this.expiration = System.currentTimeMillis() + ttl * 1000L;
            this.map = new ConcurrentHashMap<>();
        }
    }

    private static class NegativeCacheEntry<T> extends CacheEntry<T> {

        /**
         * @param ttl
         */
        NegativeCacheEntry(final long ttl) {
            super(ttl);
        }

    }