diff --git a/clib/Makefile.am b/clib/Makefile.am
index 484d511..c1395ce 100644
--- a/clib/Makefile.am
+++ b/clib/Makefile.am
@@ -19,7 +19,9 @@ libcworker_la_SOURCES = \
 	logger.c \
 	massert.c \
 	rcache.c \
-	jblock.c
+	jblock.c \
+	cdynarr.c \
+	cstring.c
 
 include_HEADERS = \
 	cflexer.h \
@@ -31,21 +33,22 @@ include_HEADERS = \
 	logger.h \
 	massert.h \
 	rcache.h \
-	jblock.h
-
+	jblock.h \
+	cdynarr.h \
+	cstring.h
 
 if HAVE_VALGRIND
 VALGRIND_OPT = --tool=memcheck
 endif
 
-test: $(bin_TESTS)
+test: valgrind
+simple: $(bin_TESTS)
 	@for test in $(bin_TESTS); do \
 	  echo ====== Test $${test} ======; \
 	  ./$${test}; \
 	  echo ====== Done $${test} ======; \
 	done
 
-
 valgrind: $(bin_TESTS)
 	@for test in $(bin_TESTS); do \
 	  echo ====== Test $${test} ======; \
@@ -53,10 +56,8 @@ valgrind: $(bin_TESTS)
 	  echo ====== Done $${test} ======; \
 	done
 
-common_SOURCES = libcworker.la
-
 bin_TESTS = \
-	jblock_test
+	cstring_test
 
 noinst_PROGRAMS = \
 	cfparser_test \
@@ -68,19 +69,23 @@ noinst_PROGRAMS = \
 	jlexer_test \
 	jparser_test \
 	rcache_test \
-	jblock_test
+	jblock_test \
+	cdynarr_test \
+	cstring_test \
+	logger_test
 
 #TESTS = $(bin_TESTS)
 
-cflexer_test_SOURCES = cflexer_test.c $(common_SOURCES)
-cfparser_test_SOURCES = cfparser_test.c $(common_SOURCES)
-cllexer_test_SOURCES = cllexer_test.c $(common_SOURCES)
-clparser_test_SOURCES = clparser_test.c $(common_SOURCES)
-jlexer_test_SOURCES = jlexer_test.c $(common_SOURCES)
-jparser_test_SOURCES = jparser_test.c $(common_SOURCES)
-rcache_test_SOURCES = rcache_test.c $(common_SOURCES)
-jblock_test_SOURCES = jblock_test.c $(common_SOURCES)
-
+cflexer_test_SOURCES = cflexer_test.c
+cfparser_test_SOURCES = cfparser_test.c
+cllexer_test_SOURCES = cllexer_test.c
+clparser_test_SOURCES = clparser_test.c
+jlexer_test_SOURCES = jlexer_test.c
+jparser_test_SOURCES = jparser_test.c
+rcache_test_SOURCES = rcache_test.c
+jblock_test_SOURCES = jblock_test.c
+cdynarr_test_SOURCES = cdynarr_test.c
+cstring_test_SOURCES = cstring_test.c
 
 cflexer_test_LDADD = libcworker.la
 cfparser_test_LDADD = libcworker.la
@@ -90,8 +95,9 @@ jblock_test_LDADD = libcworker.la
 jlexer_test_LDADD = libcworker.la
 jparser_test_LDADD = libcworker.la
 rcache_test_LDADD = libcworker.la
-
-
+cdynarr_test_LDADD = libcworker.la
+cstring_test_LDADD = libcworker.la
+logger_test_LDADD = libcworker.la
 
 clean-local:
 	rm -rf *~
diff --git a/clib/Makefile.in b/clib/Makefile.in
index a935e0b..a0d93fa 100644
--- a/clib/Makefile.in
+++ b/clib/Makefile.in
@@ -94,7 +94,9 @@ noinst_PROGRAMS = cfparser_test$(EXEEXT) clparser_test$(EXEEXT) \
 	cflexer_test$(EXEEXT) cfparser_test$(EXEEXT) \
 	cllexer_test$(EXEEXT) clparser_test$(EXEEXT) \
 	jlexer_test$(EXEEXT) jparser_test$(EXEEXT) \
-	rcache_test$(EXEEXT) jblock_test$(EXEEXT)
+	rcache_test$(EXEEXT) jblock_test$(EXEEXT) \
+	cdynarr_test$(EXEEXT) cstring_test$(EXEEXT) \
+	logger_test$(EXEEXT)
 subdir = clib
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/libtool.m4 \
@@ -114,35 +116,43 @@ LTLIBRARIES = $(noinst_LTLIBRARIES)
 libcworker_la_LIBADD =
 am_libcworker_la_OBJECTS = cflexer.lo cfparser.lo cllexer.lo \
 	clparser.lo jlexer.lo jparser.lo logger.lo massert.lo \
-	rcache.lo jblock.lo
+	rcache.lo jblock.lo cdynarr.lo cstring.lo
 libcworker_la_OBJECTS = $(am_libcworker_la_OBJECTS)
 AM_V_lt = $(am__v_lt_@AM_V@)
 am__v_lt_ = $(am__v_lt_@AM_DEFAULT_V@)
 am__v_lt_0 = --silent
 am__v_lt_1 = 
-am__objects_1 =
-am_cflexer_test_OBJECTS = cflexer_test.$(OBJEXT) $(am__objects_1)
+am_cdynarr_test_OBJECTS = cdynarr_test.$(OBJEXT)
+cdynarr_test_OBJECTS = $(am_cdynarr_test_OBJECTS)
+cdynarr_test_DEPENDENCIES = libcworker.la
+am_cflexer_test_OBJECTS = cflexer_test.$(OBJEXT)
 cflexer_test_OBJECTS = $(am_cflexer_test_OBJECTS)
 cflexer_test_DEPENDENCIES = libcworker.la
-am_cfparser_test_OBJECTS = cfparser_test.$(OBJEXT) $(am__objects_1)
+am_cfparser_test_OBJECTS = cfparser_test.$(OBJEXT)
 cfparser_test_OBJECTS = $(am_cfparser_test_OBJECTS)
 cfparser_test_DEPENDENCIES = libcworker.la
-am_cllexer_test_OBJECTS = cllexer_test.$(OBJEXT) $(am__objects_1)
+am_cllexer_test_OBJECTS = cllexer_test.$(OBJEXT)
 cllexer_test_OBJECTS = $(am_cllexer_test_OBJECTS)
 cllexer_test_DEPENDENCIES = libcworker.la
-am_clparser_test_OBJECTS = clparser_test.$(OBJEXT) $(am__objects_1)
+am_clparser_test_OBJECTS = clparser_test.$(OBJEXT)
 clparser_test_OBJECTS = $(am_clparser_test_OBJECTS)
 clparser_test_DEPENDENCIES = libcworker.la
-am_jblock_test_OBJECTS = jblock_test.$(OBJEXT) $(am__objects_1)
+am_cstring_test_OBJECTS = cstring_test.$(OBJEXT)
+cstring_test_OBJECTS = $(am_cstring_test_OBJECTS)
+cstring_test_DEPENDENCIES = libcworker.la
+am_jblock_test_OBJECTS = jblock_test.$(OBJEXT)
 jblock_test_OBJECTS = $(am_jblock_test_OBJECTS)
 jblock_test_DEPENDENCIES = libcworker.la
-am_jlexer_test_OBJECTS = jlexer_test.$(OBJEXT) $(am__objects_1)
+am_jlexer_test_OBJECTS = jlexer_test.$(OBJEXT)
 jlexer_test_OBJECTS = $(am_jlexer_test_OBJECTS)
 jlexer_test_DEPENDENCIES = libcworker.la
-am_jparser_test_OBJECTS = jparser_test.$(OBJEXT) $(am__objects_1)
+am_jparser_test_OBJECTS = jparser_test.$(OBJEXT)
 jparser_test_OBJECTS = $(am_jparser_test_OBJECTS)
 jparser_test_DEPENDENCIES = libcworker.la
-am_rcache_test_OBJECTS = rcache_test.$(OBJEXT) $(am__objects_1)
+logger_test_SOURCES = logger_test.c
+logger_test_OBJECTS = logger_test.$(OBJEXT)
+logger_test_DEPENDENCIES = libcworker.la
+am_rcache_test_OBJECTS = rcache_test.$(OBJEXT)
 rcache_test_OBJECTS = $(am_rcache_test_OBJECTS)
 rcache_test_DEPENDENCIES = libcworker.la
 AM_V_P = $(am__v_P_@AM_V@)
@@ -178,15 +188,17 @@ AM_V_CCLD = $(am__v_CCLD_@AM_V@)
 am__v_CCLD_ = $(am__v_CCLD_@AM_DEFAULT_V@)
 am__v_CCLD_0 = @echo "  CCLD    " $@;
 am__v_CCLD_1 = 
-SOURCES = $(libcworker_la_SOURCES) $(cflexer_test_SOURCES) \
-	$(cfparser_test_SOURCES) $(cllexer_test_SOURCES) \
-	$(clparser_test_SOURCES) $(jblock_test_SOURCES) \
-	$(jlexer_test_SOURCES) $(jparser_test_SOURCES) \
+SOURCES = $(libcworker_la_SOURCES) $(cdynarr_test_SOURCES) \
+	$(cflexer_test_SOURCES) $(cfparser_test_SOURCES) \
+	$(cllexer_test_SOURCES) $(clparser_test_SOURCES) \
+	$(cstring_test_SOURCES) $(jblock_test_SOURCES) \
+	$(jlexer_test_SOURCES) $(jparser_test_SOURCES) logger_test.c \
 	$(rcache_test_SOURCES)
-DIST_SOURCES = $(libcworker_la_SOURCES) $(cflexer_test_SOURCES) \
-	$(cfparser_test_SOURCES) $(cllexer_test_SOURCES) \
-	$(clparser_test_SOURCES) $(jblock_test_SOURCES) \
-	$(jlexer_test_SOURCES) $(jparser_test_SOURCES) \
+DIST_SOURCES = $(libcworker_la_SOURCES) $(cdynarr_test_SOURCES) \
+	$(cflexer_test_SOURCES) $(cfparser_test_SOURCES) \
+	$(cllexer_test_SOURCES) $(clparser_test_SOURCES) \
+	$(cstring_test_SOURCES) $(jblock_test_SOURCES) \
+	$(jlexer_test_SOURCES) $(jparser_test_SOURCES) logger_test.c \
 	$(rcache_test_SOURCES)
 am__can_run_installinfo = \
   case $$AM_UPDATE_INFO_DIR in \
@@ -392,7 +404,9 @@ libcworker_la_SOURCES = \
 	logger.c \
 	massert.c \
 	rcache.c \
-	jblock.c
+	jblock.c \
+	cdynarr.c \
+	cstring.c
 
 include_HEADERS = \
 	cflexer.h \
@@ -404,23 +418,26 @@ include_HEADERS = \
 	logger.h \
 	massert.h \
 	rcache.h \
-	jblock.h
+	jblock.h \
+	cdynarr.h \
+	cstring.h
 
 @HAVE_VALGRIND_TRUE@VALGRIND_OPT = --tool=memcheck
-common_SOURCES = libcworker.la
 bin_TESTS = \
-	jblock_test
+	cstring_test
 
 
 #TESTS = $(bin_TESTS)
-cflexer_test_SOURCES = cflexer_test.c $(common_SOURCES)
-cfparser_test_SOURCES = cfparser_test.c $(common_SOURCES)
-cllexer_test_SOURCES = cllexer_test.c $(common_SOURCES)
-clparser_test_SOURCES = clparser_test.c $(common_SOURCES)
-jlexer_test_SOURCES = jlexer_test.c $(common_SOURCES)
-jparser_test_SOURCES = jparser_test.c $(common_SOURCES)
-rcache_test_SOURCES = rcache_test.c $(common_SOURCES)
-jblock_test_SOURCES = jblock_test.c $(common_SOURCES)
+cflexer_test_SOURCES = cflexer_test.c
+cfparser_test_SOURCES = cfparser_test.c
+cllexer_test_SOURCES = cllexer_test.c
+clparser_test_SOURCES = clparser_test.c
+jlexer_test_SOURCES = jlexer_test.c
+jparser_test_SOURCES = jparser_test.c
+rcache_test_SOURCES = rcache_test.c
+jblock_test_SOURCES = jblock_test.c
+cdynarr_test_SOURCES = cdynarr_test.c
+cstring_test_SOURCES = cstring_test.c
 cflexer_test_LDADD = libcworker.la
 cfparser_test_LDADD = libcworker.la
 cllexer_test_LDADD = libcworker.la
@@ -429,6 +446,9 @@ jblock_test_LDADD = libcworker.la
 jlexer_test_LDADD = libcworker.la
 jparser_test_LDADD = libcworker.la
 rcache_test_LDADD = libcworker.la
+cdynarr_test_LDADD = libcworker.la
+cstring_test_LDADD = libcworker.la
+logger_test_LDADD = libcworker.la
 all: all-am
 
 .SUFFIXES:
@@ -486,6 +506,10 @@ clean-noinstLTLIBRARIES:
 libcworker.la: $(libcworker_la_OBJECTS) $(libcworker_la_DEPENDENCIES) $(EXTRA_libcworker_la_DEPENDENCIES) 
 	$(AM_V_CCLD)$(LINK)  $(libcworker_la_OBJECTS) $(libcworker_la_LIBADD) $(LIBS)
 
+cdynarr_test$(EXEEXT): $(cdynarr_test_OBJECTS) $(cdynarr_test_DEPENDENCIES) $(EXTRA_cdynarr_test_DEPENDENCIES) 
+	@rm -f cdynarr_test$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(cdynarr_test_OBJECTS) $(cdynarr_test_LDADD) $(LIBS)
+
 cflexer_test$(EXEEXT): $(cflexer_test_OBJECTS) $(cflexer_test_DEPENDENCIES) $(EXTRA_cflexer_test_DEPENDENCIES) 
 	@rm -f cflexer_test$(EXEEXT)
 	$(AM_V_CCLD)$(LINK) $(cflexer_test_OBJECTS) $(cflexer_test_LDADD) $(LIBS)
@@ -502,6 +526,10 @@ clparser_test$(EXEEXT): $(clparser_test_OBJECTS) $(clparser_test_DEPENDENCIES) $
 	@rm -f clparser_test$(EXEEXT)
 	$(AM_V_CCLD)$(LINK) $(clparser_test_OBJECTS) $(clparser_test_LDADD) $(LIBS)
 
+cstring_test$(EXEEXT): $(cstring_test_OBJECTS) $(cstring_test_DEPENDENCIES) $(EXTRA_cstring_test_DEPENDENCIES) 
+	@rm -f cstring_test$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(cstring_test_OBJECTS) $(cstring_test_LDADD) $(LIBS)
+
 jblock_test$(EXEEXT): $(jblock_test_OBJECTS) $(jblock_test_DEPENDENCIES) $(EXTRA_jblock_test_DEPENDENCIES) 
 	@rm -f jblock_test$(EXEEXT)
 	$(AM_V_CCLD)$(LINK) $(jblock_test_OBJECTS) $(jblock_test_LDADD) $(LIBS)
@@ -514,6 +542,10 @@ jparser_test$(EXEEXT): $(jparser_test_OBJECTS) $(jparser_test_DEPENDENCIES) $(EX
 	@rm -f jparser_test$(EXEEXT)
 	$(AM_V_CCLD)$(LINK) $(jparser_test_OBJECTS) $(jparser_test_LDADD) $(LIBS)
 
+logger_test$(EXEEXT): $(logger_test_OBJECTS) $(logger_test_DEPENDENCIES) $(EXTRA_logger_test_DEPENDENCIES) 
+	@rm -f logger_test$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(logger_test_OBJECTS) $(logger_test_LDADD) $(LIBS)
+
 rcache_test$(EXEEXT): $(rcache_test_OBJECTS) $(rcache_test_DEPENDENCIES) $(EXTRA_rcache_test_DEPENDENCIES) 
 	@rm -f rcache_test$(EXEEXT)
 	$(AM_V_CCLD)$(LINK) $(rcache_test_OBJECTS) $(rcache_test_LDADD) $(LIBS)
@@ -771,7 +803,8 @@ uninstall-am: uninstall-includeHEADERS
 .c.o:
 	$(CC) -I. -pthread $(CPPFLAGS) $(CFLAGS) -c -o $@ $<
 
-test: $(bin_TESTS)
+test: valgrind
+simple: $(bin_TESTS)
 	@for test in $(bin_TESTS); do \
 	  echo ====== Test $${test} ======; \
 	  ./$${test}; \
diff --git a/clib/cdynarr.c b/clib/cdynarr.c
new file mode 100644
index 0000000..e16cbb1
--- /dev/null
+++ b/clib/cdynarr.c
@@ -0,0 +1,93 @@
+
+/*
+ *
+ * Copyright 2023 Oleg Borodin  <borodin@unix7.org>
+ *
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#include <cdynarr.h>
+
+
+#define INIT_CAPA 64
+
+/* Integer array */
+cintarr_t* new_cintarr(void) {
+        cintarr_t* arr = malloc(sizeof(cintarr_t));
+        if (arr == NULL) return NULL;
+        if (cintarr_init(arr) == NULL) {
+            cintarr_free(arr);
+            return NULL;
+        }
+        return arr;
+}
+
+void* cintarr_init(cintarr_t* array) {
+    array->data = malloc(INIT_CAPA * sizeof(int64_t));
+    if (array->data == NULL) return NULL;
+    memset(array->data, 0, INIT_CAPA);
+    array->capa = INIT_CAPA;
+    array->size = 0;
+    return array->data;
+}
+
+void* cintarr_append(cintarr_t* array, int64_t add) {
+    if (array->size + 1 > array->capa) {
+        size_t newcapa = (array->capa * 10) / 6 ;
+        int64_t* newarray = realloc(array->data, newcapa);
+        if (newarray == NULL) return NULL;
+        array->capa = newcapa;
+        array->data = newarray;
+    }
+    array->data[array->size++] = add;
+    return array->data;
+}
+
+int64_t* cintarr_getref(cintarr_t* array) {
+    return array->data;
+}
+
+void cintarr_destroy(cintarr_t* array) {
+    if (array == NULL) return;
+    free(array->data);
+}
+
+void cintarr_free(cintarr_t* array) {
+    cintarr_destroy(array);
+    free(array->data);
+}
+
+
+/* Float array */
+void* cfltarr_init(cfltarr_t* array) {
+    array->data = malloc(INIT_CAPA * sizeof(double));
+    if (array->data == NULL) return NULL;
+    memset(array->data, 0, INIT_CAPA);
+    array->capa = INIT_CAPA;
+    array->size = 0;
+    return array->data;
+}
+
+void* cfltarr_append(cfltarr_t* array, double add) {
+    if (array->size + 1 > array->capa) {
+        size_t newcapa = (array->capa * 10) / 6 ;
+        double* newarray = realloc(array->data, newcapa);
+        if (newarray == NULL) return NULL;
+        array->capa = newcapa;
+        array->data = newarray;
+    }
+    array->data[array->size++] = add;
+    return array->data;
+}
+
+double* cfltarr_getref(cfltarr_t* array) {
+    return array->data;
+}
+
+void cfltarr_destroy(cfltarr_t* array) {
+    if (array == NULL) return;
+    free(array->data);
+}
diff --git a/clib/cdynarr.h b/clib/cdynarr.h
new file mode 100644
index 0000000..184b49b
--- /dev/null
+++ b/clib/cdynarr.h
@@ -0,0 +1,49 @@
+
+#ifndef CDYNARR_H_QWERTY
+#define CDYNARR_H_QWERTY
+
+#include <stdint.h>
+#include <stdbool.h>
+
+
+typedef struct {
+    int64_t* data;
+    int capa;
+    int size;
+} cintarr_t;
+
+typedef struct {
+    bool* data;
+    int capa;
+    int size;
+} cboolarr_t;
+
+typedef struct {
+    double* data;
+    int capa;
+    int size;
+} cfltarr_t;
+
+
+cintarr_t* new_cintarr(void);
+void* cintarr_init(cintarr_t* array);
+void* cintarr_append(cintarr_t* array, int64_t add);
+int64_t* cintarr_getref(cintarr_t* array);
+void cintarr_destroy(cintarr_t* array);
+void cintarr_free(cintarr_t* array);
+
+cfltarr_t* new_cfltarr(void);
+void* cfltarr_init(cfltarr_t* array);
+void* cfltarr_append(cfltarr_t* array, double add);
+double* cfltarr_getref(cfltarr_t* array);
+void cfltarr_destroy(cfltarr_t* array);
+void cfltarr_free(cfltarr_t* array);
+
+cboolarr_t* new_cboolarr(void);
+void* cboolarr_init(cboolarr_t* array);
+void* cboolarr_append(cboolarr_t* array, bool add);
+bool* cboolarr_getref(cboolarr_t* array);
+void cboolarr_destroy(cboolarr_t* array);
+void cboolarr_free(cboolarr_t* array);
+
+#endif
diff --git a/clib/cdynarr_test.c b/clib/cdynarr_test.c
new file mode 100644
index 0000000..cbebec3
--- /dev/null
+++ b/clib/cdynarr_test.c
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2022 Oleg Borodin  <borodin@unix7.org>
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+
+#include <massert.h>
+#include <cdynarr.h>
+
+
+void test01(void) {
+
+
+
+}
+
+int main(void) {
+    test01();
+    return 0;
+}
diff --git a/clib/clparser.c b/clib/clparser.c
index b71b914..1a34caf 100644
--- a/clib/clparser.c
+++ b/clib/clparser.c
@@ -11,7 +11,7 @@
 #include <logger.h>
 #include <clparser.h>
 
-#define INIT_BSIZE 64
+#define INIT_BSIZE 128
 
 
 static char* strcopy(char* src) {
diff --git a/clib/cstring.c b/clib/cstring.c
new file mode 100644
index 0000000..e88f2d5
--- /dev/null
+++ b/clib/cstring.c
@@ -0,0 +1,50 @@
+/*
+ *
+ * Copyright 2023 Oleg Borodin  <borodin@unix7.org>
+ *
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#include <cstring.h>
+
+#define INIT_CAPA 1
+
+/* String container */
+void* cstring_init(cstring_t* str) {
+    str->data = malloc((INIT_CAPA + 1)*sizeof(char));
+    if (str->data == NULL) return NULL;
+    memset(str->data, '\0', INIT_CAPA + 1);
+    str->capa = INIT_CAPA;
+    str->size = 0;
+    return str->data;
+}
+
+
+void* cstring_append(cstring_t* str, char* add) {
+    size_t addsize = strlen(add);
+    size_t newsize = str->size + addsize;
+    if (newsize > str->capa) {
+        size_t newcapa = str->capa + addsize;
+        char* newstr = realloc(str->data, (newcapa + 1)*sizeof(char));
+        if (newstr == NULL) return NULL;
+        str->data = newstr;
+        str->capa = newcapa;
+    }
+    strcpy(&(str->data[str->size]), add);
+    str->data[newsize + 1] = '\0';
+    str->size = newsize;
+    return str->data;
+}
+
+char* cstring_getref(cstring_t* str) {
+    return str->data;
+}
+
+
+void cstring_destroy(cstring_t* str) {
+    if (str == NULL) return;
+    free(str->data);
+}
diff --git a/clib/cstring.h b/clib/cstring.h
new file mode 100644
index 0000000..70ad58d
--- /dev/null
+++ b/clib/cstring.h
@@ -0,0 +1,17 @@
+
+#ifndef CSTRING_H_QWERTY
+#define CSTRING_H_QWERTY
+
+typedef struct {
+    char* data;
+    int capa;
+    int size;
+} cstring_t;
+
+
+void* cstring_init(cstring_t* str);
+void* cstring_append(cstring_t* str, char* add);
+char* cstring_getref(cstring_t* str);
+void cstring_destroy(cstring_t* str);
+
+#endif
diff --git a/clib/cstring_test.c b/clib/cstring_test.c
new file mode 100644
index 0000000..6d7fab5
--- /dev/null
+++ b/clib/cstring_test.c
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2022 Oleg Borodin  <borodin@unix7.org>
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+
+#include <massert.h>
+#include <cstring.h>
+
+
+void test01(void) {
+
+    cstring_t str;
+    cstring_init(&str);
+    cstring_append(&str, "qwerty");
+    cstring_append(&str, "123456\n");
+
+    cstring_append(&str, "qwerty");
+    cstring_append(&str, "123456\n");
+
+    cstring_append(&str, "qwerty");
+    cstring_append(&str, "123456\n");
+
+    cstring_append(&str, "qwerty");
+    cstring_append(&str, "123456\n");
+
+    cstring_append(&str, "qwerty");
+    cstring_append(&str, "123456\n");
+
+    printf("%s\n", cstring_getref(&str));
+
+    cstring_destroy(&str);
+}
+
+int main(void) {
+    test01();
+    return 0;
+}
diff --git a/clib/jblock.c b/clib/jblock.c
index 102a30d..950a3d1 100644
--- a/clib/jblock.c
+++ b/clib/jblock.c
@@ -4,17 +4,17 @@
  *
  */
 
-#include <jblock.h>
+
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
+#include <cstring.h>
+#include <cdynarr.h>
+#include <jblock.h>
 
 #define INIT_CAPA 64
 
-static void* jstring_init(jstring_t* str);
-static void* jstring_append(jstring_t* str, char* add);
-static char* jstring_getref(jstring_t* str);
 static char* strcopy(char* src);
 
 void jblock_init(jblock_t* jb) {
@@ -106,9 +106,9 @@ int jblock_addstr(jblock_t* jb, char* key, char* val) {
 }
 
 void jblock_outjson(jblock_t* jb, char** res) {
-    jstring_t jstr;
-    jstring_init(&jstr);
-    jstring_append(&jstr, "{");
+    cstring_t jstr;
+    cstring_init(&jstr);
+    cstring_append(&jstr, "{");
     for (int i = 0; i < jb->kvsize; i++) {
         switch (jb->kvarr[i].type) {
             case JKVTYPE_STR:
@@ -117,7 +117,7 @@ void jblock_outjson(jblock_t* jb, char** res) {
             case JKVTYPE_INT: {
                 char* buffer = NULL;
                 asprintf(&buffer, "\"%s\":", jb->kvarr[i].key);
-                jstring_append(&jstr, buffer);
+                cstring_append(&jstr, buffer);
                 free(buffer);
                 break;
             }
@@ -129,39 +129,39 @@ void jblock_outjson(jblock_t* jb, char** res) {
             case JKVTYPE_INT: {
                 char* buffer = NULL;
                 asprintf(&buffer, "%ld", jb->kvarr[i].num);
-                jstring_append(&jstr, buffer);
+                cstring_append(&jstr, buffer);
                 free(buffer);
                 break;
             }
             case JKVTYPE_FLT: {
                 char* buffer = NULL;
                 asprintf(&buffer, "%e", jb->kvarr[i].flt);
-                jstring_append(&jstr, buffer);
+                cstring_append(&jstr, buffer);
                 free(buffer);
                 break;
             }
             case JKVTYPE_BOOL: {
                 if (jb->kvarr[i].flag) {
-                    jstring_append(&jstr, "true");
+                    cstring_append(&jstr, "true");
                 } else {
-                    jstring_append(&jstr, "false");
+                    cstring_append(&jstr, "false");
                 }
                 break;
             }
             case JKVTYPE_STR: {
                 char* buffer = NULL;
                 asprintf(&buffer, "\"%s\"", jb->kvarr[i].str);
-                jstring_append(&jstr, buffer);
+                cstring_append(&jstr, buffer);
                 free(buffer);
                 break;
             }
         }
         if (i < jb->kvsize - 1) {
-                jstring_append(&jstr, ",");
+                cstring_append(&jstr, ",");
         }
     }
-    jstring_append(&jstr, "}");
-    *res = jstring_getref(&jstr);
+    cstring_append(&jstr, "}");
+    *res = cstring_getref(&jstr);
 }
 
 
@@ -205,146 +205,6 @@ void jblock_free(jblock_t* jb) {
     free(jb);
 }
 
-/* String container */
-static void* jstring_init(jstring_t* str) {
-    str->data = malloc(INIT_CAPA + 1);
-    if (str->data == NULL) return NULL;
-    memset(str->data, '\0', INIT_CAPA + 1);
-    str->capa = INIT_CAPA;
-    str->size = 0;
-    return str->data;
-}
-
-
-static void* jstring_append(jstring_t* str, char* add) {
-    size_t addsize = strlen(add);
-    size_t newsize = str->size + addsize;
-    if (newsize > str->capa) {
-        char* newstr = realloc(str->data, newsize + 1);
-        if (newstr == NULL) return NULL;
-    }
-    strcpy(&(str->data[str->size]), add);
-    str->data[newsize + 1] = '\0';
-    str->capa = newsize;
-    str->size = newsize;
-    return str->data;
-}
-
-static char* jstring_getref(jstring_t* str) {
-    return str->data;
-}
-
-/* Integer array */
-jintarr_t* new_jintarr(void) {
-        jintarr_t* arr = malloc(sizeof(jintarr_t));
-        if (arr == NULL) return NULL;
-        if (jintarr_init(arr) == NULL) {
-            jintarr_free(arr);
-            return NULL;
-        }
-        return arr;
-}
-
-void* jintarr_init(jintarr_t* array) {
-    array->data = malloc(INIT_CAPA * sizeof(int64_t));
-    if (array->data == NULL) return NULL;
-    memset(array->data, 0, INIT_CAPA);
-    array->capa = INIT_CAPA;
-    array->size = 0;
-    return array->data;
-}
-
-void* jintarr_append(jintarr_t* array, int64_t add) {
-    if (array->size + 1 > array->capa) {
-        size_t newcapa = (array->capa * 10) / 6 ;
-        int64_t* newarray = realloc(array->data, newcapa);
-        if (newarray == NULL) return NULL;
-        array->capa = newcapa;
-        array->data = newarray;
-    }
-    array->data[array->size++] = add;
-    return array->data;
-}
-
-int64_t* jintarr_getref(jintarr_t* array) {
-    return array->data;
-}
-
-void jintarr_destroy(jintarr_t* array) {
-    if (array == NULL) return;
-    free(array->data);
-}
-
-void jintarr_free(jintarr_t* array) {
-    jintarr_destroy(array);
-    free(array->data);
-}
-
-
-/* Float array */
-void* jfltarr_init(jfltarr_t* array) {
-    array->data = malloc(INIT_CAPA * sizeof(double));
-    if (array->data == NULL) return NULL;
-    memset(array->data, 0, INIT_CAPA);
-    array->capa = INIT_CAPA;
-    array->size = 0;
-    return array->data;
-}
-
-void* jfltarr_append(jfltarr_t* array, double add) {
-    if (array->size + 1 > array->capa) {
-        size_t newcapa = (array->capa * 10) / 6 ;
-        double* newarray = realloc(array->data, newcapa);
-        if (newarray == NULL) return NULL;
-        array->capa = newcapa;
-        array->data = newarray;
-    }
-    array->data[array->size++] = add;
-    return array->data;
-}
-
-double* jfltarr_getref(jfltarr_t* array) {
-    return array->data;
-}
-
-void jfltarr_destroy(jfltarr_t* array) {
-    if (array == NULL) return;
-    free(array->data);
-}
-
-
-/* Bool array */
-void* jboolarr_init(jboolarr_t* array) {
-    array->data = malloc(INIT_CAPA * sizeof(bool));
-    if (array->data == NULL) return NULL;
-    memset(array->data, 0, INIT_CAPA);
-    array->capa = INIT_CAPA;
-    array->size = 0;
-    return array->data;
-}
-
-void* jboolarr_append(jboolarr_t* array, bool add) {
-    if (array->size + 1 > array->capa) {
-        size_t newcapa = (array->capa * 10) / 6 ;
-        bool* newarray = realloc(array->data, newcapa);
-        if (newarray == NULL) return NULL;
-        array->capa = newcapa;
-        array->data = newarray;
-    }
-    array->data[array->size++] = add;
-    return array->data;
-}
-
-bool* jboolarr_getref(jboolarr_t* array) {
-    return array->data;
-}
-
-void jboolarr_destroy(jboolarr_t* array) {
-    if (array == NULL) return;
-    free(array->data);
-}
-
-
 /* Tools */
 static char* strcopy(char* src) {
     size_t srcsize = strlen(src) + 1;
diff --git a/clib/jblock.h b/clib/jblock.h
index b05e5de..a45785b 100644
--- a/clib/jblock.h
+++ b/clib/jblock.h
@@ -5,31 +5,8 @@
 #include <stdint.h>
 #include <stdbool.h>
 
-
-typedef struct {
-    char* data;
-    int capa;
-    int size;
-} jstring_t;
-
-typedef struct {
-    int64_t* data;
-    int capa;
-    int size;
-} jintarr_t;
-
-typedef struct {
-    bool* data;
-    int capa;
-    int size;
-} jboolarr_t;
-
-typedef struct {
-    double* data;
-    int capa;
-    int size;
-} jfltarr_t;
-
+#include <cdynarr.h>
+#include <cstring.h>
 
 typedef struct jblock jblock_t;
 
@@ -41,9 +18,9 @@ typedef struct {
         bool     flag;
         char*    str;
         double   flt;
-        jintarr_t  numarr;
-        jfltarr_t  fltarr;
-        jboolarr_t flagarr;
+        cintarr_t  numarr;
+        cfltarr_t  fltarr;
+        cboolarr_t flagarr;
         jblock_t*  blk;
         jblock_t*  blkarr;
         char**     strarr;
@@ -85,26 +62,5 @@ int jblock_addfloat(jblock_t* block, char* key, double val);
 int jblock_addstr(jblock_t* block, char* key, char* val);
 int jblock_addbool(jblock_t* block, char* key, bool val);
 
-jintarr_t* new_jintarr(void);
-void* jintarr_init(jintarr_t* array);
-void* jintarr_append(jintarr_t* array, int64_t add);
-int64_t* jintarr_getref(jintarr_t* array);
-void jintarr_destroy(jintarr_t* array);
-void jintarr_free(jintarr_t* array);
-
-jfltarr_t* new_jfltarr(void);
-void* jfltarr_init(jfltarr_t* array);
-void* jfltarr_append(jfltarr_t* array, double add);
-double* jfltarr_getref(jfltarr_t* array);
-void jfltarr_destroy(jfltarr_t* array);
-void jfltarr_free(jfltarr_t* array);
-
-jboolarr_t* new_jboolarr(void);
-void* jboolarr_init(jboolarr_t* array);
-void* jboolarr_append(jboolarr_t* array, bool add);
-bool* jboolarr_getref(jboolarr_t* array);
-void jboolarr_destroy(jboolarr_t* array);
-void jboolarr_free(jboolarr_t* array);
-
 
 #endif
diff --git a/clib/jblock_test.c b/clib/jblock_test.c
index c05fc9e..1f79cf8 100644
--- a/clib/jblock_test.c
+++ b/clib/jblock_test.c
@@ -30,30 +30,30 @@ void test01(void) {
 }
 
 void test02(void) {
-    jintarr_t* arr = new_jintarr();
-    jintarr_init(arr);
+    cintarr_t* arr = new_cintarr();
+    cintarr_init(arr);
 
     for (int64_t i = 0; i < 1024 + 1; i++) {
-        jintarr_append(arr, i);
+        cintarr_append(arr, i);
     }
     printf("size: %d capa: %d\n", arr->size, arr->capa);
     printf("last: %ld\n", arr->data[arr->size - 1]);
 
-    jintarr_free(arr);
+    cintarr_free(arr);
 
 }
 
 void test03(void) {
-    jfltarr_t arr;
-    jfltarr_init(&arr);
+    cfltarr_t arr;
+    cfltarr_init(&arr);
 
     for (int64_t i = 0; i < 1024 + 1; i++) {
-        jfltarr_append(&arr, i);
+        cfltarr_append(&arr, i);
     }
     printf("size: %d capa: %d\n", arr.size, arr.capa);
     printf("last: %f\n", arr.data[arr.size - 1]);
 
-    jfltarr_destroy(&arr);
+    cfltarr_destroy(&arr);
 }
 
 
diff --git a/clib/logger.c b/clib/logger.c
index 7438937..f46e302 100644
--- a/clib/logger.c
+++ b/clib/logger.c
@@ -6,16 +6,17 @@
 
 #include <stdio.h>
 #include <string.h>
+#include <stdint.h>
 #include <time.h>
 #include <stdarg.h>
 #include <pthread.h>
 
 
 #define CLOCK_SOURCE CLOCK_MONOTONIC
-#define MAX_TS_LEN 256
+#define MAX_TS_LEN 256 * 2
 
 
-static pthread_mutex_t logmutex = NULL;
+static pthread_mutex_t logmutex;
 static pthread_mutexattr_t logmutex_attrs;
 
 void log_init(void) {
@@ -42,9 +43,9 @@ void static set_timestamp(char* buffer) {
 
     clock_gettime(CLOCK_SOURCE, &tv);
     memset(buffer, '\0', MAX_TS_LEN);
-    sprintf(buffer, "%04d-%02d-%02dT%02d:%02d:%02d.%ld+%s",
+    sprintf(buffer, "%04d-%02d-%02dT%02d:%02d:%02d.%03ld+%s",
             ptm->tm_year + 1900, ptm->tm_mon + 1, ptm->tm_mday, ptm->tm_hour,
-            ptm->tm_min, ptm->tm_sec, tv.tv_nsec, ptm->tm_zone);
+            ptm->tm_min, ptm->tm_sec, tv.tv_nsec/(int64_t)1000000, ptm->tm_zone);
 }
 
 void log_error(const char* format, ...) {
diff --git a/clib/logger_test.c b/clib/logger_test.c
new file mode 100644
index 0000000..9f8add1
--- /dev/null
+++ b/clib/logger_test.c
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2022 Oleg Borodin  <borodin@unix7.org>
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+
+#include <massert.h>
+#include <logger.h>
+
+
+void test01(void) {
+    log_init();
+    log_debug("qwerty");
+    log_debug("qwerty: %s", "12345");
+    log_debug("qwerty: %d", 12345);
+    log_destroy();
+}
+
+int main(void) {
+    test01();
+    return 0;
+}
diff --git a/cworker.c b/cworker.c
index d7e66ec..c83b23c 100644
--- a/cworker.c
+++ b/cworker.c
@@ -94,7 +94,7 @@ static int cworker_readopts(const cworker_t* worker, char** argv, int argc) {
         log_error("Args parsing error");
         return -1;
     }
-
+    clparser_destroy(&parser);
     return 0;
 }
 
@@ -269,53 +269,55 @@ int cworker_run(const cworker_t* worker) {
 int cworker_handler(const cworker_t* worker, int socket) {
     int err = 0;
 
-    rcache_t cache;
-    jlexer_t lexer;
-    jparser_t parser;
+    //rcache_t cache;
+    //jlexer_t lexer;
+    //jparser_t parser;
 
-    rcache_init(&cache, socket);
-    jlexer_init(&lexer, &cache);
-    jparser_init(&parser, &lexer);
+    //rcache_init(&cache, socket);
+    //jlexer_init(&lexer, &cache);
+    //jparser_init(&parser, &lexer);
 
-    if (jparser_parse(&parser) < 0) {
-        log_error("Cannot parse json");
-        err = -1;
-        goto exit;
-    }
+    //if (jparser_parse(&parser) < 0) {
+        //log_error("Cannot parse json");
+        //err = -1;
+        //goto exit;
+    //}
 
-    int64_t id = 0;
-    char* name = "none";
+    //int64_t id = 0;
+    //char* name = "none";
 
-    if (jparser_bind(&parser, JVALTYPE_NUM, "id", (void *)&id) < 0) {
-        log_error("Cannot bind id");
-    }
-    if (jparser_bind(&parser, JVALTYPE_STR, "name", (void *)&name) < 0) {
-        log_error("Cannot bind name");
-    }
+    //if (jparser_bind(&parser, JVALTYPE_NUM, "id", (void *)&id) < 0) {
+        //log_error("Cannot bind id");
+    //}
+    //if (jparser_bind(&parser, JVALTYPE_STR, "name", (void *)&name) < 0) {
+        //log_error("Cannot bind name");
+    //}
 
 
-    char* msg = NULL;
-    asprintf(&msg, "hello, %s!", name);
+    //char* msg = NULL;
+    //asprintf(&msg, "hello, %s!", name);
 
-    jblock_t jb;
-    jblock_init(&jb);
-    jblock_addstr(&jb, "message", msg);
-    jblock_addbool(&jb, "error", false);
+    //jblock_t jb;
+    //jblock_init(&jb);
+    //jblock_addstr(&jb, "message", msg);
+    //jblock_addbool(&jb, "error", false);
 
-    char* jsonstr = NULL;
-    jblock_outjson(&jb, &jsonstr);
-    jblock_destroy(&jb);
+    //char* jsonstr = NULL;
+    //jblock_outjson(&jb, &jsonstr);
+    //jblock_destroy(&jb);
 
-    write(socket, jsonstr, strlen(jsonstr));
-    free(jsonstr);
-    free(name);
-    free(msg);
+    //write(socket, jsonstr, strlen(jsonstr));
+    //free(jsonstr);
+    //free(name);
+    //free(msg);
 
-    exit:
-        jparser_destroy(&parser);
-        jlexer_destroy(&lexer);
-        rcache_destroy(&cache);
-        return err;
+    //exit:
+        //jparser_destroy(&parser);
+        //jlexer_destroy(&lexer);
+        //rcache_destroy(&cache);
+
+    close(socket);
+    return err;
 }
 
 void cworker_shutdown(cworker_t* worker) {