Unable to connect to Remote OrientDb

[rajcdcm]

Unable to connect to OrientDb in remote mode from spring-boot-orientdb-hello example
factory.setUrl("remote:localhost/demodb"); get the following error
2017-12-14 15:36:58.374 ERROR 2583 --- [ main] c.o.orient.client.remote.OStorageRemote : Cannot open database url=10.10.220.88:2424/demodb

java.io.IOException: Timeout on reading response
at com.orientechnologies.orient.client.binary.OChannelBinaryAsynchClient.beginResponse(OChannelBinaryAsynchClient.java:249) ~[orientdb-client-3.0.0m1.jar:3.0.0m1]

On the server side getting memory heap error.

I am able to run in memory and plocal mode.

I am using springdata develop branch and OrientDB 3..M2 realease
Thank you in advance.