OrientDB embedded and distributed

Question

I should use OrientDB in embedded mode in a Java-Groovy application. At the same time, I have to distribute this java-groovy application in several machines.

The question is: is it possible to access the same database from all the machines? In other words: is it possible to have a distributed database in embedded mode in OrientDB?

Thank you

Answer 1

I know I am answering this question a little late, but I hope this will help someone else googling for the same issue:

I am able to run OrientDB in Embedded mode with Clustering (Distribution) on. Below is the complete code

System.setProperty("ORIENTDB_HOME","/your path to OrientDB/orientdb-community-1.7-rc1");

  OServer server = OServerMain.create();
  server.startup(
   "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n" + 
   "<orient-server>\n" + 
   "    <handlers>\n" +  
   "        <!-- CLUSTER PLUGIN, TO TURN ON SET THE 'ENABLED' PARAMETER TO 'true' -->\n" + 
   "        <handler class=\"com.orientechnologies.orient.server.hazelcast.OHazelcastPlugin\">\n" + 
   "            <parameters>\n" + 
   "                <!-- <parameter name=\"nodeName\" value=\"europe1\" /> -->\n" + 
   "                <parameter name=\"enabled\" value=\"true\" />\n" + 
   "                <parameter name=\"configuration.db.default\" value=\"${ORIENTDB_HOME}/config/default-distributed-db-config.json\" />\n" + 
   "                <parameter name=\"configuration.hazelcast\" value=\"${ORIENTDB_HOME}/config/hazelcast.xml\" />\n" + 
   "                <parameter name=\"conflict.resolver.impl\" value=\"com.orientechnologies.orient.server.distributed.conflict.ODefaultReplicationConflictResolver\" />\n" + 
   "                \n" + 
   "                <!-- PARTITIONING STRATEGIES -->\n" + 
   "                <parameter name=\"sharding.strategy.round-robin\" value=\"com.orientechnologies.orient.server.hazelcast.sharding.strategy.ORoundRobinPartitioninStrategy\" />\n" + 
   "            </parameters>\n" + 
   "        </handler>\n" + 
   "        <!-- AUTOMATIC BACKUP, TO TURN ON SET THE 'ENABLED' PARAMETER TO 'true' -->\n" + 
   "        <handler class=\"com.orientechnologies.orient.server.handler.OAutomaticBackup\">\n" + 
   "            <parameters>\n" + 
   "                <parameter name=\"enabled\" value=\"false\" />\n" + 
   "                <parameter name=\"delay\" value=\"4h\" />\n" + 
   "                <parameter name=\"target.directory\" value=\"backup\" />\n" + 
   "                <parameter name=\"target.fileName\" value=\"${DBNAME}-${DATE:yyyyMMddHHmmss}.json\" /><!-- ${DBNAME} AND ${DATE:} VARIABLES ARE SUPPORTED -->\n" + 
   "                <parameter name=\"db.include\" value=\"\" /><!-- DEFAULT: NO ONE, THAT MEANS ALL DATABASES. USE COMMA TO SEPARATE MULTIPLE DATABASE NAMES -->\n" + 
   "                <parameter name=\"db.exclude\" value=\"\" /><!-- USE COMMA TO SEPARATE MULTIPLE DATABASE NAMES -->\n" + 
   "            </parameters>\n" + 
   "        </handler>\n" + 
   "        <!-- MAIL, TO TURN ON SET THE 'ENABLED' PARAMETER TO 'true' -->\n" + 
   "        <handler class=\"com.orientechnologies.orient.server.plugin.mail.OMailPlugin\">\n" + 
   "            <parameters>\n" + 
   "                <parameter name=\"enabled\" value=\"true\" />\n" + 
   "                <!-- CREATE MULTIPLE PROFILES WITH profile.<name>... -->\n" + 
   "                <parameter name=\"profile.default.mail.smtp.host\" value=\"localhost\" />\n" + 
   "                <parameter name=\"profile.default.mail.smtp.port\" value=\"25\" />\n" + 
   "                <parameter name=\"profile.default.mail.smtp.auth\" value=\"true\" />\n" + 
   "                <parameter name=\"profile.default.mail.smtp.starttls.enable\" value=\"true\" />\n" + 
   "                <parameter name=\"profile.default.mail.smtp.user\" value=\"\" />\n" + 
   "                <parameter name=\"profile.default.mail.smtp.password\" value=\"\" />\n" + 
   "                <parameter name=\"profile.default.mail.date.format\" value=\"yyyy-MM-dd HH:mm:ss\" />\n" + 
   "            </parameters>\n" + 
   "        </handler>\n" + 
   "        <!-- SERVER SIDE SCRIPT INTERPRETER. WARNING! THIS CAN BE A SECURITY HOLE: ENABLE IT ONLY IF CLIENTS ARE TRUCT, TO TURN ON SET THE 'ENABLED' PARAMETER \n" + 
   "            TO 'true' -->\n" + 
   "        <handler class=\"com.orientechnologies.orient.server.handler.OServerSideScriptInterpreter\">\n" + 
   "            <parameters>\n" + 
   "                <parameter name=\"enabled\" value=\"false\" />\n" + 
   "            </parameters>\n" + 
   "        </handler>\n" + 
   "    </handlers>\n" + 
   "    <network>\n" + 
   "        <protocols>\n" + 
   "            <!-- Default registered protocol. It reads commands using the HTTP protocol and write data locally -->\n" + 
   "            <protocol name=\"binary\" implementation=\"com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary\" />\n" + 
   "            <protocol name=\"http\" implementation=\"com.orientechnologies.orient.server.network.protocol.http.ONetworkProtocolHttpDb\" />\n" + 
   "        </protocols>\n" + 
   "        <listeners>\n" + 
   "            <listener protocol=\"binary\" ip-address=\"0.0.0.0\" port-range=\"2424-2430\" />\n" + 
   "            <listener protocol=\"http\" ip-address=\"0.0.0.0\" port-range=\"2480-2490\">\n" + 
   "                <parameters>\n" + 
   "                    <!-- Connection's custom parameters. If not specified the global configuration will be taken -->\n" + 
   "                    <parameter name=\"network.http.charset\" value=\"utf-8\" />\n" + 
   "                    <!-- Define additional HTTP headers to always send as response -->\n" + 
   "                    <!-- Allow cross-site scripting -->\n" + 
   "                    <!-- parameter name=\"network.http.additionalResponseHeaders\" value=\"Access-Control-Allow-Origin: *;Access-Control-Allow-Credentials: true\" /-->\n" + 
   "                </parameters>\n" + 
   "                <commands>\n" + 
   "                    <command\n" + 
   "                        pattern=\"GET|www GET|studio/ GET| GET|*.htm GET|*.html GET|*.xml GET|*.jpeg GET|*.jpg GET|*.png GET|*.gif GET|*.js GET|*.css GET|*.swf GET|*.ico GET|*.txt GET|*.otf GET|*.pjs GET|*.svg\"\n" + 
   "                        implementation=\"com.orientechnologies.orient.server.network.protocol.http.command.get.OServerCommandGetStaticContent\">\n" + 
   "                        <parameters>\n" + 
   "                            <!-- Don't cache html resources in development mode -->\n" + 
   "                            <entry name=\"http.cache:*.htm *.html\" value=\"Cache-Control: no-cache, no-store, max-age=0, must-revalidate\\r\\nPragma: no-cache\" />\n" + 
   "                            <!-- Default caching -->\n" + 
   "                            <entry name=\"http.cache:default\" value=\"Cache-Control: max-age=120\" />\n" + 
   "                        </parameters>\n" + 
   "                    </command>\n" + 
   "                </commands>\n" + 
   "            </listener>\n" + 
   "        </listeners>\n" + 
   "        <cluster>\n" + 
   "        </cluster>\n" + 
   "    </network>\n" + 
   "    <storages>\n" + 
   "    </storages>\n" + 
   "    <users>\n" + 
   "    </users>\n" + 
   "    <properties>\n" + 
   "        <!-- Uses the Hazelcast's distributed cache as 2nd level cache -->\n" + 
   "        <!-- <entry name=\"cache.level2.impl\" value=\"com.orientechnologies.orient.server.hazelcast.OHazelcastCache\" /> -->\n" + 
   "\n" + 
   "        <!-- DATABASE POOL: size min/max -->\n" + 
   "        <entry name=\"db.pool.min\" value=\"1\" />\n" + 
   "        <entry name=\"db.pool.max\" value=\"20\" />\n" + 
   "        \n" + 
   "        <!-- LEVEL1 AND 2 CACHE: enable/disable and set the size as number of entries -->\n" + 
   "        <entry name=\"cache.level1.enabled\" value=\"false\" />\n" + 
   "        <entry name=\"cache.level1.size\" value=\"1000\" />\n" + 
   "        <entry name=\"cache.level2.enabled\" value=\"true\" />\n" + 
   "        <entry name=\"cache.level2.size\" value=\"1000\" />\n" + 
   "        \n" + 
   "        <!-- PROFILER: configures the profiler as <seconds-for-snapshot>,<archive-snapshot-size>,<summary-size>  -->\n" + 
   "        <entry name=\"profiler.enabled\" value=\"true\" />\n" + 
   "        <!-- <entry name=\"profiler.config\" value=\"30,10,10\" />  -->     \n" + 
   "\n" + 
   "        <!-- LOG: enable/Disable logging. Levels are: finer, fine, finest, info, warning -->\n" + 
   "        <entry name=\"log.console.level\" value=\"info\" />\n" + 
   "        <entry name=\"log.file.level\" value=\"fine\" />\n" + 
   "    </properties>\n" + 
   "</orient-server>");
  server.activate();

We need to add the following jars

concurrentlinkedhashmap-lru-1.3.1.jar
hazelcast-3.1.jar
javassist-3.16.1-GA.jar
orient-commons-1.7-rc1.jar
orientdb-client-1.7-rc1.jar
orientdb-core-1.7-rc1.jar
orientdb-distributed-1.7-rc1.jar
orientdb-enterprise-1.7-rc1.jar
orientdb-object-1.7-rc1.jar
orientdb-server-1.7-rc1.jar

Answer 2

Yes, take a look at: https://github.com/orientechnologies/orientdb/wiki/Embedded-Server. With the distributed configuration multiple embedded servers can be synchronized across the network.