diff --git a/include/spdlog/details/async_logger_impl.h b/include/spdlog/details/async_logger_impl.h
index aa617fa2..8c80cd2f 100644
--- a/include/spdlog/details/async_logger_impl.h
+++ b/include/spdlog/details/async_logger_impl.h
@@ -37,9 +37,7 @@ inline spdlog::async_logger::async_logger(
 
 // send the log message to the thread pool
 inline void spdlog::async_logger::_sink_it(details::log_msg &msg)
-{
-    try
-    {
+{    
 #if defined(SPDLOG_ENABLE_MESSAGE_COUNTER)
         _incr_msg_counter(msg);
 #endif
@@ -50,16 +48,7 @@ inline void spdlog::async_logger::_sink_it(details::log_msg &msg)
         else
         {
             throw spdlog_ex("async log: thread pool doens't exist anymore");
-        }
-    }
-    catch (const std::exception &ex)
-    {
-        _err_handler(ex.what());
-    }
-    catch (...)
-    {
-        _err_handler("Unknown exception in async logger " + _name);
-    }
+        }        
 }
 
 // send flush request to the thread pool
@@ -99,6 +88,11 @@ inline void spdlog::async_logger::_backend_log(details::log_msg &incoming_log_ms
     {
         _err_handler("Unknown exception in async logger " + _name);
     }
+
+	if (_should_flush(incoming_log_msg))
+	{
+		_backend_flush();
+	}
 }
 
 inline void spdlog::async_logger::_backend_flush()
diff --git a/include/spdlog/details/registry.h b/include/spdlog/details/registry.h
index bda9bb7b..0e4b0dec 100644
--- a/include/spdlog/details/registry.h
+++ b/include/spdlog/details/registry.h
@@ -148,8 +148,16 @@ public:
 
     void drop_all()
     {
-        std::lock_guard<Mutex> lock(_mutex);
-        _loggers.clear();
+		{
+			std::lock_guard<Mutex> lock(_mutex);
+			_loggers.clear();
+		}
+
+		{		
+			std::lock_guard<Mutex> lock(_tp_mutex); 
+			_tp.reset();
+		}
+		
     }
 
     Mutex &tp_mutex()
diff --git a/include/spdlog/details/traits.h b/include/spdlog/details/traits.h
new file mode 100644
index 00000000..75fa3987
--- /dev/null
+++ b/include/spdlog/details/traits.h
@@ -0,0 +1,45 @@
+#pragma once
+//
+// Copyright(c) 2018 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+namespace spdlog {
+	namespace details {
+		struct console_stdout_trait
+		{
+			static FILE* stream() {return stdout;}
+#ifdef _WIN32
+			static HANDLE handle() { return ::GetStdHandle(STD_OUTPUT_HANDLE); }
+#endif
+		};
+
+		struct console_stderr_trait
+		{
+			static FILE* stream() { return stdout; }
+#ifdef _WIN32
+			static HANDLE handle() { return ::GetStdHandle(STD_ERROR_HANDLE); }
+#endif
+		};
+
+		struct console_mutex_trait
+		{
+			using mutex_t = std::mutex;			
+			static mutex_t& console_mutex()
+			{ 
+				static auto mutex = mutex_t{};
+				return mutex;
+			}
+		};
+
+		struct console_null_mutex_trait
+		{
+			using mutex_t = null_mutex;
+			static mutex_t& console_mutex()
+			{
+				static auto mutex = mutex_t{};
+				return mutex;
+			}
+		};
+	}
+}
diff --git a/include/spdlog/sinks/ansicolor_sink.h b/include/spdlog/sinks/ansicolor_sink.h
index aaa09205..25697943 100644
--- a/include/spdlog/sinks/ansicolor_sink.h
+++ b/include/spdlog/sinks/ansicolor_sink.h
@@ -5,12 +5,14 @@
 
 #pragma once
 
-#include "../common.h"
+#include "../details/null_mutex.h"
 #include "../details/os.h"
-#include "base_sink.h"
+#include "../details/traits.h"
 
 #include <string>
 #include <unordered_map>
+#include <memory>
+#include <mutex>
 
 namespace spdlog {
 namespace sinks {
@@ -20,12 +22,15 @@ namespace sinks {
  * of the message.
  * If no color terminal detected, omit the escape codes.
  */
-template<class Mutex>
-class ansicolor_sink : public base_sink<Mutex>
-{
+template<class StdoutTrait, class ConsoleMutexTrait>
+class ansicolor_sink : public sink
+{	
 public:
-    explicit ansicolor_sink(FILE *file)
-        : target_file_(file)
+	using mutex_t = typename ConsoleMutexTrait::mutex_t;
+     ansicolor_sink()
+        : target_file_(StdoutTrait::stream()), 
+		 _mutex(ConsoleMutexTrait::mutex())
+		
     {
         should_do_colors_ = details::os::in_terminal(file) && details::os::is_color_terminal();
         colors_[level::trace] = white;
@@ -42,9 +47,12 @@ public:
         _flush();
     }
 
+	ansicolor_sink(const ansicolor_sink &other) = delete;
+	ansicolor_sink &operator=(const ansicolor_sink &other) = delete;
+
     void set_color(level::level_enum color_level, const std::string &color)
     {
-        std::lock_guard<Mutex> lock(base_sink<Mutex>::_mutex);
+        std::lock_guard<mutex_t> lock(_mutex);
         colors_[color_level] = color;
     }
 
@@ -78,35 +86,39 @@ public:
     const std::string on_cyan = "\033[46m";
     const std::string on_white = "\033[47m";
 
-protected:
-    void _sink_it(const details::log_msg &msg) override
-    {
-        // Wrap the originally formatted message in color codes.
-        // If color is not supported in the terminal, log as is instead.
-        if (should_do_colors_ && msg.color_range_end > msg.color_range_start)
-        {
-            // before color range
-            _print_range(msg, 0, msg.color_range_start);
-            // in color range
-            _print_ccode(colors_[msg.level]);
-            _print_range(msg, msg.color_range_start, msg.color_range_end);
-            _print_ccode(reset);
-            // after color range
-            _print_range(msg, msg.color_range_end, msg.formatted.size());
-        }
-        else // no color
-        {
-            _print_range(msg, 0, msg.formatted.size());
-        }
-        _flush();
-    }
 
-    void _flush() override
-    {
-        fflush(target_file_);
-    }
+	void log(const details::log_msg &msg) SPDLOG_FINAL override
+	{
+		// Wrap the originally formatted message in color codes.
+		// If color is not supported in the terminal, log as is instead.
+		std::lock_guard<mutex_t> lock(_mutex);
+		if (should_do_colors_ && msg.color_range_end > msg.color_range_start)
+		{
+			// before color range
+			_print_range(msg, 0, msg.color_range_start);
+			// in color range
+			_print_ccode(colors_[msg.level]);
+			_print_range(msg, msg.color_range_start, msg.color_range_end);
+			_print_ccode(reset);
+			// after color range
+			_print_range(msg, msg.color_range_end, msg.formatted.size());
+		}
+		else // no color
+		{
+			_print_range(msg, 0, msg.formatted.size());
+		}
+		fflush(target_file_);
+	}
 
-private:
+	void flush() SPDLOG_FINAL override
+	{
+		std::lock_guard<mutex_t> lock(_mutex);
+		fflush(target_file_);
+	}
+    
+
+private:	
+	
     void _print_ccode(const std::string &color_code)
     {
         fwrite(color_code.data(), sizeof(char), color_code.size(), target_file_);
@@ -115,36 +127,19 @@ private:
     {
         fwrite(msg.formatted.data() + start, sizeof(char), end - start, target_file_);
     }
+
     FILE *target_file_;
+	mutex_t & _mutex;
+
     bool should_do_colors_;
     std::unordered_map<level::level_enum, std::string, level::level_hasher> colors_;
 };
+#ifndef _WIN32
+using stdout_color_mt = ansicolor_sink<details::console_stdout_trait, details::console_mutex_trait>;
+using stdout_color_st = ansicolor_sink<details::console_stdout_trait, details::console_null_mutex_trait>;
 
-template<class Mutex>
-class ansicolor_stdout_sink : public ansicolor_sink<Mutex>
-{
-public:
-    ansicolor_stdout_sink()
-        : ansicolor_sink<Mutex>(stdout)
-    {
-    }
-};
-
-using ansicolor_stdout_sink_mt = ansicolor_stdout_sink<std::mutex>;
-using ansicolor_stdout_sink_st = ansicolor_stdout_sink<details::null_mutex>;
-
-template<class Mutex>
-class ansicolor_stderr_sink : public ansicolor_sink<Mutex>
-{
-public:
-    ansicolor_stderr_sink()
-        : ansicolor_sink<Mutex>(stderr)
-    {
-    }
-};
-
-using ansicolor_stderr_sink_mt = ansicolor_stderr_sink<std::mutex>;
-using ansicolor_stderr_sink_st = ansicolor_stderr_sink<details::null_mutex>;
-
+using stderr_color_mt = ansicolor_sink<details::console_stderr_trait, details::console_mutex_trait>;
+using stderr_color_st = ansicolor_sink<details::console_stderr_trait, details::console_null_mutex_trait>;
+#endif
 } // namespace sinks
 } // namespace spdlog
diff --git a/include/spdlog/sinks/stdout_sinks.h b/include/spdlog/sinks/stdout_sinks.h
index f0911f4a..a0be0a33 100644
--- a/include/spdlog/sinks/stdout_sinks.h
+++ b/include/spdlog/sinks/stdout_sinks.h
@@ -6,7 +6,7 @@
 #pragma once
 
 #include "../details/null_mutex.h"
-#include "base_sink.h"
+#include "../details/traits.h"
 
 #include <cstdio>
 #include <memory>
@@ -15,53 +15,40 @@
 namespace spdlog {
 namespace sinks {
 
-template<class Mutex>
-class stdout_sink SPDLOG_FINAL : public base_sink<Mutex>
-{
-    using MyType = stdout_sink<Mutex>;
-
+template<class StdoutTrait, class ConsoleMutexTrait>
+class stdout_sink : public sink
+{ 	
 public:
-    explicit stdout_sink() = default;
+	using mutex_t = typename ConsoleMutexTrait::mutex_t;
+	stdout_sink() :
+		_mutex(ConsoleMutexTrait::console_mutex()),
+		_file(StdoutTrait::stream()) {}
+	~stdout_sink() = default;
 
-protected:
-    void _sink_it(const details::log_msg &msg) override
+	stdout_sink(const stdout_sink &other) = delete;
+	stdout_sink &operator=(const stdout_sink &other) = delete;
+
+    void log(const details::log_msg &msg) override
     {
-        fwrite(msg.formatted.data(), sizeof(char), msg.formatted.size(), stdout);
-        _flush();
+		std::lock_guard<mutex_t> lock(_mutex);
+        fwrite(msg.formatted.data(), sizeof(char), msg.formatted.size(), _file);
+        fflush(StdoutTrait::stream());
     }
 
-    void _flush() override
+    void flush() override
     {
-        fflush(stdout);
+		std::lock_guard<mutex_t> lock(_mutex);
+        fflush(StdoutTrait::stream());
     }
+private:
+	typename mutex_t&  _mutex;
+	FILE* _file;
 };
 
-using stdout_sink_mt = stdout_sink<std::mutex>;
-using stdout_sink_st = stdout_sink<details::null_mutex>;
-
-template<class Mutex>
-class stderr_sink SPDLOG_FINAL : public base_sink<Mutex>
-{
-    using MyType = stderr_sink<Mutex>;
-
-public:
-    explicit stderr_sink() = default;
-
-protected:
-    void _sink_it(const details::log_msg &msg) override
-    {
-        fwrite(msg.formatted.data(), sizeof(char), msg.formatted.size(), stderr);
-        _flush();
-    }
-
-    void _flush() override
-    {
-        fflush(stderr);
-    }
-};
-
-using stderr_sink_mt = stderr_sink<std::mutex>;
-using stderr_sink_st = stderr_sink<details::null_mutex>;
+using stdout_sink_mt = stdout_sink<details::console_stdout_trait, details::console_mutex_trait>;
+using stdout_sink_st = stdout_sink<details::console_stdout_trait, details::console_null_mutex_trait>;
+using stderr_sink_mt = stdout_sink<details::console_stderr_trait, details::console_mutex_trait>;
+using stderr_sink_st = stdout_sink<details::console_stderr_trait, details::console_null_mutex_trait>;
 
 } // namespace sinks
 } // namespace spdlog
diff --git a/include/spdlog/sinks/wincolor_sink.h b/include/spdlog/sinks/wincolor_sink.h
index c44c0023..e377c7c0 100644
--- a/include/spdlog/sinks/wincolor_sink.h
+++ b/include/spdlog/sinks/wincolor_sink.h
@@ -7,7 +7,7 @@
 
 #include "../common.h"
 #include "../details/null_mutex.h"
-#include "base_sink.h"
+#include "../details/traits.h"
 
 #include <mutex>
 #include <memory>
@@ -19,11 +19,12 @@ namespace spdlog {
 namespace sinks {
 /*
  * Windows color console sink. Uses WriteConsoleA to write to the console with colors
- */
-template<class Mutex>
+ */	
+template<class HandleTrait, class ConsoleMutexTrait>
 class wincolor_sink : public sink
 {
 public:
+	
     const WORD BOLD = FOREGROUND_INTENSITY;
     const WORD RED = FOREGROUND_RED;
     const WORD GREEN = FOREGROUND_GREEN;
@@ -31,8 +32,9 @@ public:
     const WORD WHITE = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
     const WORD YELLOW = FOREGROUND_RED | FOREGROUND_GREEN;
 
-    wincolor_sink(HANDLE std_handle,  Mutex& stdout_mutex)
-        : out_handle_(std_handle), _mutex(stdout_mutex)
+    wincolor_sink()
+        : out_handle_(HandleTrait::handle()),
+		_mutex(ConsoleMutexTrait::console_mutex())
     {
         colors_[level::trace] = WHITE;
         colors_[level::debug] = CYAN;
@@ -55,13 +57,13 @@ public:
     // change the color for the given level
     void set_color(level::level_enum level, WORD color)
     {
-        std::lock_guard<Mutex> lock(base_sink<Mutex>::_mutex);
+        std::lock_guard<mutex_t> lock(_mutex);
         colors_[level] = color;
     }
 
 	void log(const details::log_msg &msg) SPDLOG_FINAL override
 	{
-		std::lock_guard<Mutex> lock(_mutex);
+		std::lock_guard<mutex_t> lock(_mutex);
 
 		if (msg.color_range_end > msg.color_range_start)
 		{
@@ -85,9 +87,9 @@ public:
 	{
 		// windows console always flushed?
 	}
-
     
 private:  
+	using mutex_t = typename ConsoleMutexTrait::mutex_t;
     // set color and return the orig console attributes (for resetting later)
     WORD set_console_attribs(WORD attribs)
     {
@@ -109,64 +111,18 @@ private:
     }
 
 	HANDLE out_handle_;
-	Mutex& _mutex;
+	mutex_t &_mutex;
 	std::unordered_map<level::level_enum, WORD, level::level_hasher> colors_;
 };
 
 //
 // windows color console to stdout
 //
-template<class Mutex>
-class wincolor_stdout_sink : public wincolor_sink<Mutex>
-{	
-public:
-	wincolor_stdout_sink()
-		: wincolor_sink<Mutex>(GetStdHandle(STD_OUTPUT_HANDLE), details::os::stdout_mutex())
-    {
-    }
-};
 
-template<>
-class wincolor_stdout_sink<details::null_mutex> : public wincolor_sink<details::null_mutex>
-{
-	details::null_mutex _null_mutex;
-public:
-	wincolor_stdout_sink()
-		: wincolor_sink<details::null_mutex>(GetStdHandle(STD_OUTPUT_HANDLE), _null_mutex)
-	{
-	}
-
-};
-
-using wincolor_stdout_sink_mt = wincolor_stdout_sink<std::mutex>;
-using wincolor_stdout_sink_st = wincolor_stdout_sink<details::null_mutex>;
-
-//
-// windows color console to stderr
-//
-template<class Mutex>
-class wincolor_stderr_sink : public wincolor_sink<Mutex>
-{
-public:
-    wincolor_stderr_sink()
-        : wincolor_sink<Mutex>(GetStdHandle(STD_ERROR_HANDLE), details::os::stderr_mutex())
-    {
-    }
-};
-
-template<>
-class wincolor_stderr_sink<details::null_mutex> : public wincolor_sink<details::null_mutex>
-{
-	details::null_mutex _null_mutex;
-public:
-	wincolor_stderr_sink()
-		: wincolor_sink<details::null_mutex>(GetStdHandle(STD_ERROR_HANDLE), _null_mutex)
-	{
-	}
-};
-
-using wincolor_stderr_sink_mt = wincolor_stderr_sink<std::mutex>;
-using wincolor_stderr_sink_st = wincolor_stderr_sink<details::null_mutex>;
+using stdout_color_mt = wincolor_sink<details::console_stdout_trait, details::console_mutex_trait>;
+using stdout_color_st = wincolor_sink<details::console_stdout_trait, details::console_null_mutex_trait>;
+using stderr_color_mt = wincolor_sink<details::console_stderr_trait, details::console_mutex_trait>;
+using stderr_color_st = wincolor_sink<details::console_stderr_trait, details::console_null_mutex_trait>;
 
 } // namespace sinks
 } // namespace spdlog
diff --git a/include/spdlog/spdlog.h b/include/spdlog/spdlog.h
index a7544926..285309f5 100644
--- a/include/spdlog/spdlog.h
+++ b/include/spdlog/spdlog.h
@@ -176,48 +176,57 @@ inline std::shared_ptr<logger> daily_logger_st(const std::string &logger_name, c
     return Factory::template create<sinks::daily_file_sink_st>(logger_name, filename, hour, minute);
 }
 
-///////////////////////////////////////////////////////////////////////////////
-// stdout and stderr loggers
 //
-// multi threaded and colored:
-//    spdlog::console<stdout_color_mt>("name")
-//    spdlog::console<stderr_color_mt>("name")
+// color console logger
 //
-// single threaded and colored:
-//    spdlog::console<stdout_color_st>("name")
-//    spdlog::console<stderr_color_st>("name")
-//
-// multi threaded, no color:
-//    spdlog::console<stdout_mt>("name")
-//    spdlog::console<stderr_mt>("name")
-//
-// single threaded, no color:
-//   spdlog::console<stdout_st>("name")
-//   spdlog::console<stderr_st>("name")
-///////////////////////////////////////////////////////////////////////////////
-
-#if defined _WIN32 // window color console
-using stdout_color_mt = sinks::wincolor_stdout_sink_mt;
-using stdout_color_st = sinks::wincolor_stdout_sink_st;
-using stderr_color_mt = sinks::wincolor_stderr_sink_mt;
-using stderr_color_st = sinks::wincolor_stderr_sink_st;
-#else // ansi color console
-using stdout_color_mt = sinks::ansicolor_stdout_sink_mt;
-using stdout_color_st = sinks::ansicolor_stdout_sink_st;
-using stderr_color_mt = sinks::ansicolor_stderr_sink_mt;
-using stderr_color_st = sinks::ansicolor_stderr_sink_st;
-#endif
-// no color console
-using stdout_mt = sinks::stdout_sink_mt;
-using stdout_st = sinks::stdout_sink_st;
-using stderr_mt = sinks::stderr_sink_mt;
-using stderr_st = sinks::stderr_sink_st;
-
-template<typename Sink, typename Factory = default_factory>
-inline std::shared_ptr<logger> console(const std::string &logger_name)
+template<typename Factory = default_factory>
+inline std::shared_ptr<logger> stdout_color_mt(const std::string &logger_name)
 {
-    return Factory::template create<Sink>(logger_name);
+	return Factory::template create<sinks::stdout_color_mt>(logger_name);
 }
+template<typename Factory = default_factory>
+inline std::shared_ptr<logger> stdout_color_st(const std::string &logger_name)
+{
+	return Factory::template create<sinks::stdout_color_st>(logger_name);
+}
+
+template<typename Factory = default_factory>
+inline std::shared_ptr<logger> stderr_color_mt(const std::string &logger_name)
+{
+	return Factory::template create<sinks::stderr_color_mt>(logger_name);
+}
+
+template<typename Factory = default_factory>
+inline std::shared_ptr<logger> stderr_color_st(const std::string &logger_name)
+{
+	return Factory::template create<sinks::stderr_color_st>(logger_name);
+}
+
+// console loggers (no colors)
+template<typename Factory = default_factory>
+inline std::shared_ptr<logger> stdout_logger_mt(const std::string &logger_name)
+{
+	return Factory::template create<sinks::stdout_sink_mt>(logger_name);
+}
+
+template<typename Factory = default_factory>
+inline std::shared_ptr<logger> stdout_logger_st(const std::string &logger_name)
+{
+	return Factory::template create<sinks::stdout_sink_st>(logger_name);
+}
+
+template<typename Factory = default_factory>
+inline std::shared_ptr<logger> stderr_logger_mt(const std::string &logger_name)
+{
+	return Factory::template create<sinks::stderr_sink_mt>(logger_name);
+}
+
+template<typename Factory = default_factory>
+inline std::shared_ptr<logger> stderr_logger_st(const std::string &logger_name)
+{
+	return Factory::template create<sinks::stderr_sink_st>(logger_name);
+}
+
 
 #ifdef SPDLOG_ENABLE_SYSLOG
 // Create and register a syslog logger