diff --git a/commafeed-client/src/app/types.ts b/commafeed-client/src/app/types.ts
index aa9e1c18..b7b7798f 100644
--- a/commafeed-client/src/app/types.ts
+++ b/commafeed-client/src/app/types.ts
@@ -3,38 +3,6 @@ export interface AddCategoryRequest {
     parentId?: string
 }
 
-export interface ApplicationSettings {
-    publicUrl: string
-    allowRegistrations: boolean
-    createDemoAccount: boolean
-    googleAnalyticsTrackingCode?: string
-    googleAuthKey?: string
-    backgroundThreads: number
-    databaseUpdateThreads: number
-    smtpHost?: string
-    smtpPort?: number
-    smtpTls?: boolean
-    smtpUserName?: string
-    smtpPassword?: string
-    smtpFromAddress?: string
-    graphiteEnabled?: boolean
-    graphitePrefix?: string
-    graphiteHost?: string
-    graphitePort?: number
-    graphiteInterval?: number
-    heavyLoad: boolean
-    pubsubhubbub: boolean
-    imageProxyEnabled: boolean
-    queryTimeout: number
-    keepStatusDays: number
-    maxFeedCapacity: number
-    refreshIntervalMinutes: number
-    cache: ApplicationSettingsCache
-    announcement?: string
-    userAgent?: string
-    unreadThreshold?: Date
-}
-
 export interface Category {
     id: string
     parentId?: string
@@ -300,8 +268,6 @@ export interface UserModel {
     admin: boolean
 }
 
-export type ApplicationSettingsCache = "NOOP" | "REDIS"
-
 export type ReadingMode = "all" | "unread"
 
 export type ReadingOrder = "asc" | "desc"
diff --git a/commafeed-server/config.dev.yml b/commafeed-server/config.dev.yml
index a27ed025..b631aaf6 100644
--- a/commafeed-server/config.dev.yml
+++ b/commafeed-server/config.dev.yml
@@ -27,7 +27,10 @@ app:
   
   # number of database updating threads
   databaseUpdateThreads: 1
-  
+
+  # rows to delete per query while cleaning up old entries
+  databaseCleanupBatchSize: 100
+
   # settings for sending emails (password recovery)
   smtpHost: localhost
   smtpPort: 25
diff --git a/commafeed-server/config.yml.example b/commafeed-server/config.yml.example
index 298c02f7..e07e4a9c 100644
--- a/commafeed-server/config.yml.example
+++ b/commafeed-server/config.yml.example
@@ -28,6 +28,9 @@ app:
   # number of database updating threads
   databaseUpdateThreads: 1
 
+  # rows to delete per query while cleaning up old entries
+  databaseCleanupBatchSize: 100
+
   # settings for sending emails (password recovery)
   smtpHost:
   smtpPort:
diff --git a/commafeed-server/src/main/java/com/commafeed/CommaFeedConfiguration.java b/commafeed-server/src/main/java/com/commafeed/CommaFeedConfiguration.java
index 229338e0..bbab016f 100644
--- a/commafeed-server/src/main/java/com/commafeed/CommaFeedConfiguration.java
+++ b/commafeed-server/src/main/java/com/commafeed/CommaFeedConfiguration.java
@@ -7,6 +7,7 @@ import javax.validation.Valid;
 import javax.validation.constraints.Min;
 import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.NotNull;
+import javax.validation.constraints.Positive;
 
 import org.apache.commons.lang3.time.DateUtils;
 
@@ -95,6 +96,11 @@ public class CommaFeedConfiguration extends Configuration {
 		@Valid
 		private Integer databaseUpdateThreads;
 
+		@NotNull
+		@Positive
+		@Valid
+		private Integer databaseCleanupBatchSize = 100;
+
 		private String smtpHost;
 		private int smtpPort;
 		private boolean smtpTls;
diff --git a/commafeed-server/src/main/java/com/commafeed/backend/service/DatabaseCleaningService.java b/commafeed-server/src/main/java/com/commafeed/backend/service/DatabaseCleaningService.java
index 2155d60e..9e58d4fc 100644
--- a/commafeed-server/src/main/java/com/commafeed/backend/service/DatabaseCleaningService.java
+++ b/commafeed-server/src/main/java/com/commafeed/backend/service/DatabaseCleaningService.java
@@ -6,6 +6,7 @@ import java.util.List;
 import javax.inject.Inject;
 import javax.inject.Singleton;
 
+import com.commafeed.CommaFeedConfiguration;
 import com.commafeed.backend.dao.FeedDAO;
 import com.commafeed.backend.dao.FeedEntryContentDAO;
 import com.commafeed.backend.dao.FeedEntryDAO;
@@ -14,7 +15,6 @@ import com.commafeed.backend.dao.FeedEntryStatusDAO;
 import com.commafeed.backend.dao.UnitOfWork;
 import com.commafeed.backend.model.Feed;
 
-import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 
 /**
@@ -22,11 +22,10 @@ import lombok.extern.slf4j.Slf4j;
  * 
  */
 @Slf4j
-@RequiredArgsConstructor(onConstructor = @__({ @Inject }))
 @Singleton
 public class DatabaseCleaningService {
 
-	private static final int BATCH_SIZE = 100;
+	private final int batchSize;
 
 	private final UnitOfWork unitOfWork;
 	private final FeedDAO feedDAO;
@@ -34,6 +33,17 @@ public class DatabaseCleaningService {
 	private final FeedEntryContentDAO feedEntryContentDAO;
 	private final FeedEntryStatusDAO feedEntryStatusDAO;
 
+	@Inject
+	public DatabaseCleaningService(CommaFeedConfiguration config, UnitOfWork unitOfWork, FeedDAO feedDAO, FeedEntryDAO feedEntryDAO,
+			FeedEntryContentDAO feedEntryContentDAO, FeedEntryStatusDAO feedEntryStatusDAO) {
+		this.unitOfWork = unitOfWork;
+		this.feedDAO = feedDAO;
+		this.feedEntryDAO = feedEntryDAO;
+		this.feedEntryContentDAO = feedEntryContentDAO;
+		this.feedEntryStatusDAO = feedEntryStatusDAO;
+		this.batchSize = config.getApplicationSettings().getDatabaseCleanupBatchSize();
+	}
+
 	public void cleanFeedsWithoutSubscriptions() {
 		log.info("cleaning feeds without subscriptions");
 		long total = 0;
@@ -44,7 +54,7 @@ public class DatabaseCleaningService {
 			for (Feed feed : feeds) {
 				long entriesDeleted;
 				do {
-					entriesDeleted = unitOfWork.call(() -> feedEntryDAO.delete(feed.getId(), BATCH_SIZE));
+					entriesDeleted = unitOfWork.call(() -> feedEntryDAO.delete(feed.getId(), batchSize));
 					entriesTotal += entriesDeleted;
 					log.info("removed {} entries for feeds without subscriptions", entriesTotal);
 				} while (entriesDeleted > 0);
@@ -61,7 +71,7 @@ public class DatabaseCleaningService {
 		long total = 0;
 		long deleted;
 		do {
-			deleted = unitOfWork.call(() -> feedEntryContentDAO.deleteWithoutEntries(BATCH_SIZE));
+			deleted = unitOfWork.call(() -> feedEntryContentDAO.deleteWithoutEntries(batchSize));
 			total += deleted;
 			log.info("removed {} contents without entries", total);
 		} while (deleted != 0);
@@ -71,7 +81,7 @@ public class DatabaseCleaningService {
 	public void cleanEntriesForFeedsExceedingCapacity(final int maxFeedCapacity) {
 		long total = 0;
 		while (true) {
-			List<FeedCapacity> feeds = unitOfWork.call(() -> feedEntryDAO.findFeedsExceedingCapacity(maxFeedCapacity, BATCH_SIZE));
+			List<FeedCapacity> feeds = unitOfWork.call(() -> feedEntryDAO.findFeedsExceedingCapacity(maxFeedCapacity, batchSize));
 			if (feeds.isEmpty()) {
 				break;
 			}
@@ -80,7 +90,7 @@ public class DatabaseCleaningService {
 				long remaining = feed.getCapacity() - maxFeedCapacity;
 				do {
 					final long rem = remaining;
-					int deleted = unitOfWork.call(() -> feedEntryDAO.deleteOldEntries(feed.getId(), Math.min(BATCH_SIZE, rem)));
+					int deleted = unitOfWork.call(() -> feedEntryDAO.deleteOldEntries(feed.getId(), Math.min(batchSize, rem)));
 					total += deleted;
 					remaining -= deleted;
 					log.info("removed {} entries for feeds exceeding capacity", total);
@@ -95,7 +105,7 @@ public class DatabaseCleaningService {
 		long total = 0;
 		long deleted;
 		do {
-			deleted = unitOfWork.call(() -> feedEntryStatusDAO.deleteOldStatuses(olderThan, BATCH_SIZE));
+			deleted = unitOfWork.call(() -> feedEntryStatusDAO.deleteOldStatuses(olderThan, batchSize));
 			total += deleted;
 			log.info("removed {} old read statuses", total);
 		} while (deleted != 0);
diff --git a/commafeed-server/src/test/resources/config.test.yml b/commafeed-server/src/test/resources/config.test.yml
index 2d880cde..e5cb3ce6 100644
--- a/commafeed-server/src/test/resources/config.test.yml
+++ b/commafeed-server/src/test/resources/config.test.yml
@@ -28,6 +28,9 @@ app:
   # number of database updating threads
   databaseUpdateThreads: 1
   
+  # rows to delete per query while cleaning up old entries
+  databaseCleanupBatchSize: 100
+
   # settings for sending emails (password recovery)
   smtpHost: localhost
   smtpPort: 25