diff --git a/Makefile b/Makefile
index 969be2ac6..40db51b0f 100644
--- a/Makefile
+++ b/Makefile
@@ -42,7 +42,7 @@ endif
 ##############################################################################
 
 .PHONY = check help all clean install uninstall uninstall_all build_bin build_src
-VERSION = 3.1.0
+VERSION = 3.1.2
 
 help:
 	@(echo "usage: make help|all|clean|install|uninstall|uninstall_all|build_bin|build_src")
diff --git a/README.md b/README.md
index 6e4800058..8d1dee373 100644
--- a/README.md
+++ b/README.md
@@ -148,7 +148,8 @@ acl 
 -    13 queue: 磁盘文件队列操作库
 -    14 ipc: 阻塞/非阻塞通信整合库
 -    15 session: HTTP 会话库
--    16 redis: 完整实现了 redis 协议的客户端通信库(总共 12 个大类，150 多个命令)，支持连接池及连接池集群管理
+-    **16 redis: 完整实现了 redis 协议的客户端通信库(总共 12 个大类，150 多个命令)，支持连接池及连接池集群管理**
+-    17 disque: 支持集群消息队列服务 disque 的客户端库，支持连接池及连接池集群管理
 
 ### 3.4、图例
 *    类索引图：
diff --git a/changes.txt b/changes.txt
index 7f0cbe687..ff243a1eb 100644
--- a/changes.txt
+++ b/changes.txt
@@ -1,5 +1,6 @@
 修改历史列表：
 ------------------------------------------------------------------------
+86) 2015.5.9 --- acl 3.1.2 版本发布！
 85) 2015.5.5
 85.1) lib_acl_cpp/samples/disque: 测试分布式消息队列 disque 客户端库例子
 
diff --git a/lib_acl/src/init/acl_init.c b/lib_acl/src/init/acl_init.c
index 976642e34..e9c08dc6e 100644
--- a/lib_acl/src/init/acl_init.c
+++ b/lib_acl/src/init/acl_init.c
@@ -24,7 +24,7 @@
 
 #include "init.h"
 
-static char *version = "acl_3.1.1";
+static char *version = "acl_3.1.2";
 
 const char *acl_version(void)
 {
diff --git a/lib_acl_cpp/samples/disque/README.md b/lib_acl_cpp/samples/disque/README.md
index 0efebf635..9077e4299 100644
--- a/lib_acl_cpp/samples/disque/README.md
+++ b/lib_acl_cpp/samples/disque/README.md
@@ -141,7 +141,7 @@ int main(void)
 ```
 
 ### add acl disque to your projects
-Before you use the acl disque, you should compile the three base libraries which disque depending on. Enter the ** lib_acl, lib_protocol, lib_acl_cpp,** and build the lib_acl.a, lib_protocol.a and lib_acl_cpp.a.
+Before you use the acl disque, you should compile the three base libraries which disque depending on. Enter the `lib_acl`, `lib_protocol`, `lib_acl_cpp`, and build the `lib_acl.a`, `lib_protocol.a` and `lib_acl_cpp.a`.
 ```compile
 $cd lib_acl; make
 $cd lib_protocol; make
@@ -152,7 +152,7 @@ $cd lib_acl_cpp; make
 In your Makefile, you should add below compiling flags:
 -DLINUX2 for LINUX, -DFREEBSD for FreeBSD, -DMACOSX for MAXOS, -DSUNOS5 for Solaris X86;
 -I path specify the lib_acl.hpp's parent path, for exmaple: -I./lib_acl_cpp/include, in the lib_acl_cpp/include path the acl_cpp path should be included;
-At last, link with ** -L{path_to_acl_cpp} -l_acl_cpp -L{path_to_protocol} -l_protocol -L{path_to_acl) -l_acl **
+At last, link with `-L{path_to_acl_cpp} -l_acl_cpp -L{path_to_protocol} -l_protocol -L{path_to_acl) -l_acl`
 Of couse you can look at the Makefile.in in lib_acl_cpp\samples and Makfile in lib_acl_cpp\samples\disque\ to find the build conditions.
 One Makefile as below:
 ```Makefile
diff --git a/lib_acl_cpp/samples/redis/README.md b/lib_acl_cpp/samples/redis/README.md
index 92fbf9f1a..2d1389c68 100644
--- a/lib_acl_cpp/samples/redis/README.md
+++ b/lib_acl_cpp/samples/redis/README.md
@@ -8,13 +8,13 @@ The header files of acl redis are in lib_acl_cpp\include\acl_cpp\redis; the sour
 Because acl redis lib is a part of lib_acl_cpp lib, and lib_acl_cpp depend lib_acl and lib_protocol, you should compile lib_acl and lib_protocol libs first, and compile lib_acl_cpp lib. After you've compiled lib_acl_cpp lib, the redis lib is also compiled OK.
 
 ### compile on UNIX/LINUX
-- 1 compile ** lib_acl.a **: Enter into lib_acl path and type make, the lib_acl.a will be compiled
-- 2 compile ** lib_protocol.a **: Enter into lib_protocol path and type make, the lib_protocol.a will be compiled
-- 3 compile ** lib_acl_cpp.a **: Enter into lib_acl_cpp path and type make, the lib_acl_cpp.a will be compiled
+- 1 compile `lib_acl.a`: Enter into *lib_acl* path and type make, the lib_acl.a will be compiled
+- 2 compile `lib_protocol.a`: Enter into *lib_protocol* path and type make, the lib_protocol.a will be compiled
+- 3 compile `lib_acl_cpp.a`: Enter into *lib_acl_cpp* path and type make, the lib_acl_cpp.a will be compiled
 - 4 compile redis samples: Enter into lib_acl_cpp\samples\redis and type make, all the redis samples(including redis_cluster, redis_connection, redis_hash, redis_hyperloglog, redis_key, redis_lib, redis_manager, redis_pool, redis_pubsub, redis_server, redis_set, redis_string, redis_trans, redis_zset, redis_zset_pool, redis_client_cluster) will be compiled.
 
 ### compile on WINDOWS
-You can use VC2003, VC2008, VC2010, VC2012 to build all acl libs including acl redis lib in lib_acl_cpp module when you open the acl projects(acl_cpp_vc2003.sln, acl_cpp_vc2008.sln, acl_cpp_vc2010.sln, acl_cpp_vc2012.sln). You should build lib_acl first, and second build lib_protocol, and third build lib_acl_cpp, and at last build all the acl samples including redis samples.
+You can use `VC2003`, `VC2008`, `VC2010`, `VC2012` to build all acl libs including acl redis lib in lib_acl_cpp module when you open the acl projects(acl_cpp_vc2003.sln, acl_cpp_vc2008.sln, acl_cpp_vc2010.sln, acl_cpp_vc2012.sln). You should build lib_acl first, and second build lib_protocol, and third build lib_acl_cpp, and at last build all the acl samples including redis samples.
 
 ## write some samples using acl redis lib
 ### simple example for redis STRING and redis KEY:
@@ -214,7 +214,7 @@ int main(void)
 ```
 
 ### add acl redis to your projects
-Before you use the acl redis, you should compile the three base libraries which redis depending on. Enter the lib_acl, lib_protocol, lib_acl_cpp, and build the ** lib_acl.a, lib_protocol.a and lib_acl_cpp.a **.
+Before you use the acl redis, you should compile the three base libraries which redis depending on. Enter the *lib_acl*, *lib_protocol*, *lib_acl_cpp*, and build the `lib_acl.a`, `lib_protocol.a` and `lib_acl_cpp.a`.
 ```compile
 $cd lib_acl; make
 $cd lib_protocol; make
diff --git a/lib_acl_cpp/src/redis/redis_client.cpp b/lib_acl_cpp/src/redis/redis_client.cpp
index 3659dcaa2..d279c701d 100644
--- a/lib_acl_cpp/src/redis/redis_client.cpp
+++ b/lib_acl_cpp/src/redis/redis_client.cpp
@@ -91,7 +91,10 @@ redis_result* redis_client::get_redis_error(dbuf_pool* pool)
 {
 	buf_.clear();
 	if (conn_.gets(buf_) == false)
+	{
+		logger_error("gets line error, server: %s", addr_);
 		return NULL;
+	}
 
 	redis_result* rr = new(pool) redis_result(pool);
 	rr->set_type(REDIS_RESULT_ERROR);
@@ -105,7 +108,10 @@ redis_result* redis_client::get_redis_status(dbuf_pool* pool)
 {
 	buf_.clear();
 	if (conn_.gets(buf_) == false)
+	{
+		logger_error("gets line error, server: %s", addr_);
 		return NULL;
+	}
 
 	redis_result* rr = new(pool) redis_result(pool);
 	rr->set_type(REDIS_RESULT_STATUS);
@@ -119,7 +125,10 @@ redis_result* redis_client::get_redis_integer(dbuf_pool* pool)
 {
 	buf_.clear();
 	if (conn_.gets(buf_) == false)
+	{
+		logger_error("gets line error, server: %s", addr_);
 		return NULL;
+	}
 
 	redis_result* rr = new(pool) redis_result(pool);
 	rr->set_type(REDIS_RESULT_INTEGER);
@@ -133,7 +142,10 @@ redis_result* redis_client::get_redis_string(dbuf_pool* pool)
 {
 	buf_.clear();
 	if (conn_.gets(buf_) == false)
+	{
+		logger_error("gets line error, server: %s", addr_);
 		return NULL;
+	}
 	redis_result* rr = new(pool) redis_result(pool);
 	rr->set_type(REDIS_RESULT_STRING);
 	int len = atoi(buf_.c_str());
@@ -147,14 +159,20 @@ redis_result* redis_client::get_redis_string(dbuf_pool* pool)
 		rr->set_size(1);
 		buf = (char*) pool->dbuf_alloc(len + 1);
 		if (len > 0 && conn_.read(buf, (size_t) len) == -1)
+		{
+			logger_error("read data error, server: %s", addr_);
 			return NULL;
+		}
 		buf[len] = 0;
 		rr->put(buf, (size_t) len);
 
 		// 读 \r\n
 		buf_.clear();
 		if (conn_.gets(buf_) == false)
+		{
+			logger_error("gets line error, server: %s", addr_);
 			return NULL;
+		}
 		return rr;
 	}
 
@@ -173,7 +191,10 @@ redis_result* redis_client::get_redis_string(dbuf_pool* pool)
 		n = len > CHUNK_LENGTH - 1 ? CHUNK_LENGTH - 1 : len;
 		buf = (char*) pool->dbuf_alloc((size_t) (n + 1));
 		if (conn_.read(buf, (size_t) n) == -1)
+		{
+			logger_error("read data error, server: %s", addr_);
 			return NULL;
+		}
 		buf[n] = 0;
 		rr->put(buf, (size_t) n);
 		len -= n;
@@ -181,7 +202,10 @@ redis_result* redis_client::get_redis_string(dbuf_pool* pool)
 	
 	buf_.clear();
 	if (conn_.gets(buf_) == false)
+	{
+		logger_error("gets line error, server: %s", addr_);
 		return NULL;
+	}
 	return rr;
 }
 
@@ -215,7 +239,7 @@ redis_result* redis_client::get_redis_object(dbuf_pool* pool)
 	char ch;
 	if (conn_.read(ch) == false)
 	{
-		logger_error("read first char error");
+		logger_error("read first char error, server: %s", addr_);
 		return NULL;
 	}