added in memory cache and redis cache and marked them as application scoped

pom.xml

@@ -19,6 +19,7 @@
 		<jpa.datasource.name>java:openejb/Resource/My DataSource</jpa.datasource.name>
 		<jpa.dialect>org.hibernate.dialect.HSQLDialect</jpa.dialect>
 		<jpa.cache>false</jpa.cache>
+		<cache_service.class>com.commafeed.backend.cache.InMemoryCacheService</cache_service.class>
 	</properties>
 
 	<repositories>
@@ -69,6 +70,16 @@
 				<version>2.3</version>
 				<configuration>
 					<failOnMissingWebXml>false</failOnMissingWebXml>
+					<webResources>
+						<resource>
+							<directory>${basedir}/src/main/webapp/WEB-INF</directory>
+							<targetPath>WEB-INF</targetPath>
+							<filtering>true</filtering>
+							<includes>
+    							<include>**/beans.xml</include>
+    						</includes>
+						</resource>
+					</webResources>
 				</configuration>
 			</plugin>
 			<plugin>
@@ -172,6 +183,11 @@
 				</exclusion>
 			</exclusions>
 		</dependency>
+		<dependency>
+			<groupId>redis.clients</groupId>
+			<artifactId>jedis</artifactId>
+			<version>2.0.0</version>
+		</dependency>
 		<dependency>
 			<groupId>org.liquibase</groupId>
 			<artifactId>liquibase-core</artifactId>
@@ -443,6 +459,12 @@
 				<jpa.cache>true</jpa.cache>
 			</properties>
 		</profile>
+		<profile>
+			<id>redis</id>
+			<properties>
+				<cache_service.class>com.commafeed.backend.cache.RedisCacheService</cache_service.class>
+			</properties>
+		</profile>
 		<profile>
 			<id>mysql</id>
 			<properties>