increase the buffer between ingestion and insertion thread

I was finally able to show that there is a tiny but measureable
effect of this buffer. I think it was not visible before,
because the parsing was too slow. But now, that I replaced the
date parser, the ingestion thread is twice as fast as the
insertion thread. Therefore the buffer makes more sense.

pdb-ui/src/main/java/org/lucares/pdbui/TcpIngestor.java

@@ -121,7 +121,7 @@ public class TcpIngestor implements Ingestor, AutoCloseable, DisposableBean {
 	@Override
 	public void start() throws Exception {
 
-		final ArrayBlockingQueue<Entry> queue = new ArrayBlockingQueue<>(100);
+		final ArrayBlockingQueue<Entry> queue = new ArrayBlockingQueue<>(10_000);
 
 		serverThreadPool.submit(() -> {
 			Thread.currentThread().setName("db-ingestion");