diff --git a/project/MornyConfiguration.scala b/project/MornyConfiguration.scala
index 1fb6b3e..9d8a1d2 100644
--- a/project/MornyConfiguration.scala
+++ b/project/MornyConfiguration.scala
@@ -8,7 +8,7 @@ object MornyConfiguration {
 	val MORNY_CODE_STORE = "https://github.com/Eyre-S/Coeur-Morny-Cono"
 	val MORNY_COMMIT_PATH = "https://github.com/Eyre-S/Coeur-Morny-Cono/commit/%s"
 	
-	val VERSION = "2.0.0-alpha15"
+	val VERSION = "2.0.0-alpha16"
 	val VERSION_DELTA: Option[String] = None
 	val CODENAME = "guanggu"
 	
diff --git a/src/main/scala/cc/sukazyo/cono/morny/core/MornyConfig.java b/src/main/scala/cc/sukazyo/cono/morny/core/MornyConfig.java
index 8ec087d..1e7db07 100644
--- a/src/main/scala/cc/sukazyo/cono/morny/core/MornyConfig.java
+++ b/src/main/scala/cc/sukazyo/cono/morny/core/MornyConfig.java
@@ -102,12 +102,24 @@ public class MornyConfig {
 	public final boolean commandLoginRefresh;
 	public final boolean commandLogoutClear;
 	
+	/* ======================================= *
+	 *  system: inline queries                 *
+	 * ======================================= */
+	
+	public final int inlineQueryCacheTimeMax;
+	
 	/* ======================================= *
 	 *  system: http server                    *
 	 * ======================================= */
 	
 	public final int httpPort;
 	
+	/* ======================================= *
+	 *  system: debug flags                    *
+	 * ======================================= */
+	
+	public final boolean debugMode; 
+	
 	/* ======================================= *
 	 *  function: reporter                     *
 	 * ======================================= */
@@ -172,6 +184,8 @@ public class MornyConfig {
 		this.medicationNotifyAt = prototype.medicationNotifyAt;
 		if (prototype.httpPort < 0 || prototype.httpPort > 65535) throw new CheckFailure.UnavailableHttpPort();
 		this.httpPort = prototype.httpPort;
+		this.debugMode = prototype.debugMode;
+		this.inlineQueryCacheTimeMax = prototype.inlineQueryCacheTimeMax;
 	}
 	
 	public static class CheckFailure extends RuntimeException {
@@ -203,6 +217,8 @@ public class MornyConfig {
 		@Nonnull public ZoneOffset medicationTimerUseTimezone = ZoneOffset.UTC;
 		@Nonnull public final Set<Integer> medicationNotifyAt = new HashSet<>();
 		public int httpPort = 30179;
+		public boolean debugMode = false;
+		public int inlineQueryCacheTimeMax = 300;
 		
 	}
 	
diff --git a/src/main/scala/cc/sukazyo/cono/morny/core/ServerMain.scala b/src/main/scala/cc/sukazyo/cono/morny/core/ServerMain.scala
index 3a4147e..5138d71 100644
--- a/src/main/scala/cc/sukazyo/cono/morny/core/ServerMain.scala
+++ b/src/main/scala/cc/sukazyo/cono/morny/core/ServerMain.scala
@@ -30,7 +30,16 @@ object ServerMain {
 		while (i < args.length) {
 			args(i) match {
 				
-				case "-d" | "--dbg" | "--debug" => Log.debug(true)
+				case "-d" | "--debug" =>
+					Log.debug(true)
+					config.debugMode = true
+				case "--debug-run" =>
+					config.debugMode = true
+				case "--dbg" =>
+					Log.debug(true)
+					deprecatedArgs += "--dbg" -> "--verbose-logging"
+				case "--verbose-logging" | "--verbose" =>
+					Log.debug(true)
 				case "-t" | "--test" => mode_testRun = true
 				
 				case "--no-hello" | "-hf" | "--quiet" | "-q" => showHello = false
@@ -110,10 +119,31 @@ object ServerMain {
 			   |  ${deprecatedArgs map((d, n) => s"$d : use $n instead") mkString "\n  "}
 			   |""".stripMargin
 		
-		if (Log debug)
+		if (config.debugMode && Log.debug)
+			logger `warn`
+				"""Coeur Debug mode enabled.
+				  |
+				  |  The debug log will be outputted, and caches will be disabled.
+				  |  It will cause much unnecessary performance cost, may caused extremely slow down on your bot.
+				  |  Make sure that you are not in production environment.
+				  |  
+				  |  Since 2.0.0, this mode is the combined of the two following options:
+				  |    --debug-run       enable coeur debug mode, that will disabled all the caches.
+				  |    --verbose-logging enable the logger to output debug/trace logs."""
+					.stripMargin
+		else if (config.debugMode)
+			logger `warn`
+				"""Coeur Debug mode enabled.
+				  |
+				  |  All the bot caches will be disabled.
+				  |  It will cause much unnecessary performance cost, may caused extremely slow down on your bot.
+				  |  Make sure that you are not in production environment."""
+					.stripMargin
+		else if (Log debug)
 			logger `warn`
 				"""Debug log output enabled.
-				  |  It may lower your performance, make sure that you are not in production environment."""
+				  |  It will output much more debug/trace logs, may lower your performance,
+				  |  so make sure that you are not in production environment."""
 					.stripMargin
 		
 		if (mode_echoVersion) {
diff --git a/src/main/scala/cc/sukazyo/cono/morny/core/bot/event/MornyOnInlineQuery.scala b/src/main/scala/cc/sukazyo/cono/morny/core/bot/event/MornyOnInlineQuery.scala
index 595715d..df62376 100644
--- a/src/main/scala/cc/sukazyo/cono/morny/core/bot/event/MornyOnInlineQuery.scala
+++ b/src/main/scala/cc/sukazyo/cono/morny/core/bot/event/MornyOnInlineQuery.scala
@@ -18,11 +18,14 @@ class MornyOnInlineQuery (using queryManager: MornyQueryManager) (using coeur: M
 		
 		val results: List[InlineQueryUnit[?]] = queryManager `query` update
 		
-		var cacheTime = Int.MaxValue
+		var cacheTime =
+			if (coeur.config.debugMode) 0
+			else coeur.config.inlineQueryCacheTimeMax
 		var isPersonal = InlineQueryUnit.defaults.IS_PERSONAL
 		val resultAnswers = ListBuffer[InlineQueryResult[?]]()
 		for (r <- results) {
-			if (cacheTime > r.cacheTime) cacheTime = r.cacheTime
+			if (!coeur.config.debugMode)
+				if (cacheTime > r.cacheTime) cacheTime = r.cacheTime
 			if (r isPersonal) isPersonal = true
 			resultAnswers += r.result
 		}