diff --git a/doc/release_notes.md b/doc/release_notes.md
new file mode 100644
index 0000000..dfedaf7
--- /dev/null
+++ b/doc/release_notes.md
@@ -0,0 +1,30 @@
+# Release Notes
+
+| date | version |
+| ---- | ---- |
+| 2024-01-11 | v0.1.5 |
+| 2024-01-13 | v0.1.6 |
+| 2024-03-22 | v0.2.0 |
+| 2024-08-21 | v0.3.0 |
+| 2024-09-05 | v0.3.1 |
+
+---
+## v0.3.1
+* fix: long log line overflow
+
+---
+## v0.3.0
+* update: allow to disable thread context auto initialize
+
+---
+## v0.2.0
+* update: support callback function before backend run
+
+---
+## v0.1.6
+* update: hint non-standard(c11) '%lf' specifier
+* fix: serialize '%%'
+
+---
+## v0.1.5
+* fix: haclog context init
diff --git a/haclog/haclog_context.c b/haclog/haclog_context.c
index a102989..f787527 100644
--- a/haclog/haclog_context.c
+++ b/haclog/haclog_context.c
@@ -91,9 +91,9 @@ unsigned long haclog_context_get_bytes_buf_size()
 
 void haclog_context_set_msg_buf_size(unsigned long bufsize)
 {
-	if (bufsize < HACLOG_DEFAULT_MSG_BUF_SIZE) {
-		bufsize = HACLOG_DEFAULT_MSG_BUF_SIZE;
-	}
+	// if (bufsize < HACLOG_DEFAULT_MSG_BUF_SIZE) {
+	//     bufsize = HACLOG_DEFAULT_MSG_BUF_SIZE;
+	// }
 	haclog_context_t *ctx = haclog_context_get();
 	ctx->msg_buf_size = bufsize;
 }
diff --git a/haclog/haclog_log.c b/haclog/haclog_log.c
index e429950..b4d650e 100644
--- a/haclog/haclog_log.c
+++ b/haclog/haclog_log.c
@@ -100,8 +100,8 @@ static haclog_thread_ret_t s_haclog_backend_func(void *args)
 	}
 
 	unsigned long bufsize = ctx->msg_buf_size;
-	if (bufsize < 2048) {
-		bufsize = 2048;
+	if (bufsize < 8) {
+		bufsize = 8;
 	}
 
 	char *buf = (char *)malloc(bufsize);
diff --git a/haclog/haclog_vsprintf.c b/haclog/haclog_vsprintf.c
index 26cb5e2..6303aff 100644
--- a/haclog/haclog_vsprintf.c
+++ b/haclog/haclog_vsprintf.c
@@ -1373,8 +1373,29 @@ int haclog_printf_primitive_format(haclog_bytes_buffer_t *bytes_buf,
 		} break;
 		}
 
+		// NOTE:
+		//   snprintf return the number of caracters would have been written to
+		//   the fianl string **if enough space had been available**
+		//   so need to manual compare n and buf_remain!!!
+		//
+		// e.g.
+		//   char buf[4];
+		//   memset(buf, 0, sizeof(buf));
+		//   int n = snprintf(buf, sizeof(buf), "%s", "0123456789");
+		//
+		//   * the result:
+		//     buf = "012\0"
+		//     n = 10
+		if (n > buf_remain) {
+			n = buf_remain;
+		}
+
 		total_bytes += n;
 		buf_remain -= n;
+
+		if (buf_remain <= 0) {
+			break;
+		}
 	}
 
 	if (fmt_pos != primitive->fmt_len) {
diff --git a/test/long_message/test_long_message.c b/test/long_message/test_long_message.c
new file mode 100644
index 0000000..762d8d7
--- /dev/null
+++ b/test/long_message/test_long_message.c
@@ -0,0 +1,99 @@
+#include "haclog/haclog.h"
+#include "unity.h"
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#define LINE_SIZE 8
+#define FILE_PATH "logs/test_long_message.log"
+
+void setUp()
+{
+}
+
+void tearDown()
+{
+}
+
+int my_write_meta(struct haclog_handler *handler, haclog_meta_info_t *meta)
+{
+	// do nothing
+	HACLOG_UNUSED(handler);
+	HACLOG_UNUSED(meta);
+	return 0;
+}
+
+void add_console_handler()
+{
+	static haclog_console_handler_t handler;
+	memset(&handler, 0, sizeof(handler));
+	if (haclog_console_handler_init(&handler, 1) != 0) {
+		fprintf(stderr, "failed init console handler");
+		exit(EXIT_FAILURE);
+	}
+
+	haclog_handler_set_level((haclog_handler_t *)&handler, HACLOG_LEVEL_INFO);
+	haclog_handler_set_fn_write_meta((haclog_handler_t *)&handler,
+									 my_write_meta);
+	haclog_context_add_handler((haclog_handler_t *)&handler);
+}
+
+void add_file_handler()
+{
+	static haclog_file_handler_t handler;
+	memset(&handler, 0, sizeof(handler));
+	if (haclog_file_handler_init(&handler, FILE_PATH, "w") != 0) {
+		fprintf(stderr, "failed init file handler");
+		exit(EXIT_FAILURE);
+	}
+	haclog_handler_set_level((haclog_handler_t *)&handler, HACLOG_LEVEL_DEBUG);
+	haclog_handler_set_fn_write_meta((haclog_handler_t *)&handler,
+									 my_write_meta);
+	haclog_context_add_handler((haclog_handler_t *)&handler);
+}
+
+void write_log()
+{
+	add_console_handler();
+	add_file_handler();
+	haclog_backend_run();
+
+	haclog_context_set_msg_buf_size(LINE_SIZE);
+	char buf[LINE_SIZE * 2];
+	for (int i = 0; i < LINE_SIZE * 2 - 1; ++i) {
+		buf[i] = '0';
+	}
+	buf[LINE_SIZE * 2 - 1] = '\0';
+
+	haclog_thread_context_init();
+
+	HACLOG_INFO("%s", buf);
+
+	haclog_thread_context_cleanup();
+}
+
+void test_long_message()
+{
+	write_log();
+
+	FILE *fp = fopen(FILE_PATH, "rb");
+	fseek(fp, 0L, SEEK_END);
+	long n = ftell(fp);
+	fclose(fp);
+
+#if HACLOG_PLATFORM_WINDOWS
+	// NOTE: in windows, new line is '\r''\n'
+	TEST_ASSERT_TRUE(n - 1 <= LINE_SIZE);
+#else
+	TEST_ASSERT_TRUE(n <= LINE_SIZE);
+#endif
+}
+
+int main()
+{
+	UNITY_BEGIN();
+
+	RUN_TEST(test_long_message);
+
+	return UNITY_END();
+}
diff --git a/version.txt b/version.txt
index 0d91a54..9e11b32 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-0.3.0
+0.3.1