diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
new file mode 100644
index 0000000..4662699
--- /dev/null
+++ b/.vscode/c_cpp_properties.json
@@ -0,0 +1,18 @@
+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "includePath": [
+                "${workspaceFolder}/**",
+                "${workspaceFolder}/includes/",
+                "/usr/lib/jvm/java-8-openjdk-amd64/include/",
+                "/usr/lib/jvm/java-8-openjdk-amd64/include/linux/"
+            ],
+            "defines": [],
+            "compilerPath": "/usr/bin/clang",
+            "cStandard": "c11",
+            "cppStandard": "c++17"
+        }
+    ],
+    "version": 4
+}
\ No newline at end of file
diff --git a/src/main/de/mrbesen/youtubecrawler/DB.java b/src/main/de/mrbesen/youtubecrawler/DB.java
index 7c11ae7..8c4856b 100644
--- a/src/main/de/mrbesen/youtubecrawler/DB.java
+++ b/src/main/de/mrbesen/youtubecrawler/DB.java
@@ -26,13 +26,16 @@ public class DB implements Runnable {
 	private Thread randomrefill = null;
 	private int dbsize = 0;
 	
-	private StringBuilder tostorebuffer ;
+	private StringBuilder tostorebuffer;
 	private int writebuffersize = 500;
 	private int writebuffercurrentsize = 0;
 	
 	private StringBuilder totempbuffer;
 	private int writetempbuffercurrentsize = 0;
 
+	private final int TEMPBUFFERRATIO = 15;
+	private final int STOREBUFFERRATIO = 100;
+
 	public DB() {
 		try {
 			connect(false);
@@ -70,8 +73,8 @@ public class DB implements Runnable {
 			} catch(NumberFormatException e) {
 				log.warn("could not read the number \"" + Config.prop.getProperty("db.writebuffersize") + "\" from the config file. db.writebuffersize");
 			}
-			tostorebuffer = new StringBuilder(writebuffersize);
-			totempbuffer = new StringBuilder(writebuffersize);
+			tostorebuffer = new StringBuilder(writebuffersize * STOREBUFFERRATIO);
+			totempbuffer = new StringBuilder(writebuffersize * TEMPBUFFERRATIO);
 		} catch (SQLException e) {
 			log.error("Error while connecting to the database! ", e);
 		}
@@ -138,7 +141,7 @@ public class DB implements Runnable {
 				for(int i = 0; i < input.size(); i++) {
 					Video v = input.get(i);
 					if(v != null)
-						tostorebuffer.append(",('").append(escape(v.id)).append("',").append(v.length).append(",").append(v.created).append(",'").append(escape(v.languageCode)).append("',").append(v.categorie).append(",'").append(escape(v.title)).append("','").append(escape(v.channel)).append("','").append(escape(v.tags)).append("') ");
+						tostorebuffer.append("('").append(escape(v.id)).append("',").append(v.length).append(",").append(v.created).append(",'").append(escape(v.languageCode)).append("',").append(v.categorie).append(",'").append(escape(v.title)).append("','").append(escape(v.channel)).append("','").append(escape(v.tags)).append("'),");
 				}
 			}
 		}
@@ -146,13 +149,13 @@ public class DB implements Runnable {
 			if(tostorebuffer.length() > 10) {
 				log.info("Write databuffer to DB video count: " + writebuffercurrentsize);
 				dbsize += writebuffercurrentsize;
-				tostorebuffer.deleteCharAt(0);//delete leading ','
+				tostorebuffer.deleteCharAt(tostorebuffer.length()-1);//delete trailing ','
 				String qu = "INSERT IGNORE INTO `videos`(`id`, `length`, `created`, `langcode`, `category`, `videotitle`, `channel`, `tags`) VALUES " + tostorebuffer.toString();
 				update(qu);
 				
 				//reset buffer
 				writebuffercurrentsize = 0;
-				tostorebuffer = new StringBuilder(writebuffersize);
+				tostorebuffer = new StringBuilder(writebuffersize * STOREBUFFERRATIO);
 			}
 		}
 	}
@@ -284,18 +287,18 @@ public class DB implements Runnable {
 			log.info("store Temp to buffer: " + strings.size());
 			writetempbuffercurrentsize += strings.size();
 			for(String s : strings) {
-				totempbuffer.append(", ('").append(escape(s)).append("')");
+				totempbuffer.append("('").append(escape(s)).append("'),");
 			}
 		}
 		if(writetempbuffercurrentsize > writebuffersize || force) {
 			log.info("Write Buffer: " + writetempbuffercurrentsize);
-			totempbuffer.deleteCharAt(0);//delete leading ','
+			totempbuffer.deleteCharAt(totempbuffer.length()-1);//delete trailing ','
 			String qu = "INSERT IGNORE INTO `temp` (`ytid`) VALUES " + totempbuffer.toString() + ";";
 			update(qu);
 			
 			//reset
 			writetempbuffercurrentsize = 0;
-			totempbuffer = new StringBuilder(writebuffersize);
+			totempbuffer = new StringBuilder(writebuffersize * TEMPBUFFERRATIO);
 		}
 	}
 
@@ -308,7 +311,6 @@ public class DB implements Runnable {
 			if(con != null) {
 				if(!con.isClosed()) {
 					addVideos(null, true);
-					con.commit();
 					con.close();
 				}
 			}