diff --git a/kvdb/include/kvdb/kvdb_impl.h b/kvdb/include/kvdb/kvdb_impl.h
index 215cd8e07762e99688f02eed0bd5ffc3a18a0f3e..b610120afc15314a46134a88db1c5979ba6b1287 100644
--- a/kvdb/include/kvdb/kvdb_impl.h
+++ b/kvdb/include/kvdb/kvdb_impl.h
@@ -19,12 +19,12 @@
 #include <memory>
 #include <chrono>
 class AbstractKVDB;
-class AbstractDictReader;
-class AbstractParamDict;
+class FileReader;
+class ParamDict;
 
 typedef std::shared_ptr<AbstractKVDB> AbsKVDBPtr;
-typedef std::shared_ptr<AbstractDictReader> AbsDictReaderPtr;
-typedef std::shared_ptr<AbstractParamDict> AbsParamDictPtr;
+typedef std::shared_ptr<FileReader> FileReaderPtr;
+typedef std::shared_ptr<ParamDict> ParamDictPtr;
 
 class AbstractKVDB {
 public:
@@ -38,15 +38,50 @@ public:
 // TODO: Implement RedisKVDB
 //class RedisKVDB;
 
-class AbstractDictReader {
+class FileReader {
 public:
-    virtual std::string GetFileName() = 0;
-    virtual void SetFileName(std::string) = 0;
-    virtual std::string GetMD5() = 0;
-    virtual bool CheckDiff() = 0;
-    virtual std::chrono::system_clock::time_point GetTimeStamp() = 0;
-    virtual void Read(AbstractParamDict*) = 0;
-    virtual ~AbstractDictReader() = 0;
+    inline virtual std::string GetFileName() {
+        return this->filename_;
+    }
+    
+    inline virtual void SetFileName(std::string filename) {
+        this->filename_ = filename;
+        this->last_md5_val_ = this->GetMD5();
+        this->time_stamp_ = std::chrono::system_clock::now();
+    }
+    
+    inline virtual std::string GetMD5() {
+        auto getCmdOut = [] (std::string cmd) {
+            std::string data;
+            FILE *stream = nullptr;
+            const int max_buffer = 256;
+            char buffer[max_buffer];
+            cmd.append(" 2>&1");
+            stream = popen(cmd.c_str(), "r");
+            if (stream) {
+                if (fgets(buffer, max_buffer, stream) != NULL) {
+                    data.append(buffer);
+                }
+            }
+            return data;
+        };
+        std::string cmd = "md5sum " + this->filename_;
+        //TODO: throw exception if error occurs during execution of shell command
+        std::string md5val = getCmdOut(cmd);
+        this->time_stamp_ = md5val == this->last_md5_val_? this->time_stamp_: std::chrono::system_clock::now();
+        this->last_md5_val_ = md5val;
+        return md5val;
+    }
+    
+    inline virtual bool CheckDiff() {
+        return this->GetMD5() == this->last_md5_val_;
+    }
+
+    inline virtual std::chrono::system_clock::time_point GetTimeStamp() {
+        return this->time_stamp_; 
+    } 
+
+    inline virtual ~FileReader() {};
 protected:
     std::string filename_;
     std::string last_md5_val_;
@@ -54,27 +89,31 @@ protected:
 };
 
 
-class AbstractParamDict {
+class ParamDict {
+    typedef std::string Key;
+    typedef std::vector<std::string> Value;
 public:
-    virtual std::vector<AbsDictReaderPtr> GetDictReaderLst() = 0;
-    virtual void SetDictReaderLst(std::vector<AbsDictReaderPtr>) = 0;
+    virtual std::vector<FileReaderPtr> GetDictReaderLst();
+    virtual void SetFileReaderLst(std::vector<std::string> lst);
 
-    virtual std::vector<float> GetSparseValue(int64_t, int64_t) = 0;
-    virtual std::vector<float> GetSparseValue(std::string, std::string) = 0;
+    virtual std::vector<float> GetSparseValue(int64_t, int64_t);
+    virtual std::vector<float> GetSparseValue(std::string, std::string);
     
-    virtual bool InsertSparseValue(int64_t, int64_t, const std::vector<float>&) = 0;
-    virtual bool  InsertSparseValue(std::string, std::string, const std::vector<float>&) = 0;
-
-    virtual void UpdateBaseModel() = 0;
-    virtual void UpdateDeltaModel() = 0;
+    virtual bool InsertSparseValue(int64_t, int64_t, const std::vector<float>&);
+    virtual bool InsertSparseValue(std::string, std::string, const std::vector<float>&);
 
-    virtual std::pair<AbsKVDBPtr, AbsKVDBPtr> GetKVDB() = 0;
-    virtual void SetKVDB(std::pair<AbsKVDBPtr, AbsKVDBPtr>) = 0;
-    virtual void CreateKVDB() = 0;
+    virtual void SetReader(std::function<std::pair<Key, Value>(std::string)>);
+    virtual void UpdateBaseModel();
+    virtual void UpdateDeltaModel();
 
-    virtual ~AbstractParamDict() = 0;
+    virtual std::pair<AbsKVDBPtr, AbsKVDBPtr> GetKVDB();
+    virtual void SetKVDB(std::pair<AbsKVDBPtr, AbsKVDBPtr>);
+    virtual void CreateKVDB();
+    
+    virtual ~ParamDict();
 protected:
-    std::vector<AbsDictReaderPtr> dict_reader_lst_;
+    std::function<std::pair<Key, Value>(std::string)> read_func_;
+    std::vector<FileReaderPtr> file_reader_lst_;
     AbsKVDBPtr front_db, back_db;
 };
 
@@ -83,9 +122,9 @@ protected:
 class ParamDictMgr {
 public:
     void UpdateAll();
-    void InsertParamDict(std::string, AbsParamDictPtr);
+    void InsertParamDict(std::string, ParamDictPtr);
 
 protected:
-    std::unordered_map<std::string, AbsParamDictPtr> ParamDictMap;
+    std::unordered_map<std::string, ParamDictPtr> ParamDictMap;
 };
 
diff --git a/kvdb/include/kvdb/rocksdb_impl.h b/kvdb/include/kvdb/rocksdb_impl.h
index 890c5f86cab6c41b916359fbecbe36cf800e4d75..71adb23a5175d4b4542f71947f415b9313db74f9 100644
--- a/kvdb/include/kvdb/rocksdb_impl.h
+++ b/kvdb/include/kvdb/rocksdb_impl.h
@@ -30,36 +30,6 @@ public:
     static int db_count;
 };
 
-class RocksDBDictReader : public AbstractDictReader{
-public:
-    std::string GetFileName();
-    void SetFileName(std::string);
-    std::string GetMD5();
-    bool CheckDiff();
-    std::chrono::system_clock::time_point GetTimeStamp();
-    void Read(AbstractParamDict*);
-    ~RocksDBDictReader();
-};
-
-class RocksDBParamDict : public AbstractParamDict{
-public:
-    std::vector<AbsDictReaderPtr> GetDictReaderLst();
-    void SetDictReaderLst(std::vector<AbsDictReaderPtr>);
-
-    std::vector<float> GetSparseValue(int64_t, int64_t);
-    std::vector<float> GetSparseValue(std::string, std::string);
 
-    bool InsertSparseValue(int64_t, int64_t, const std::vector<float>&);
-    bool InsertSparseValue(std::string, std::string, const std::vector<float>&);
-
-    void UpdateBaseModel();
-    void UpdateDeltaModel();
-
-    std::pair<AbsKVDBPtr, AbsKVDBPtr> GetKVDB();
-    void SetKVDB(std::pair<AbsKVDBPtr, AbsKVDBPtr>);
-    void CreateKVDB();
-
-    ~RocksDBParamDict();
-};
 
 
diff --git a/kvdb/src/.gtest_kvdb.cpp.swp b/kvdb/src/.gtest_kvdb.cpp.swp
deleted file mode 100644
index 22618177ce8d4d22c0a46df11f667b6e6e7ae5ea..0000000000000000000000000000000000000000
Binary files a/kvdb/src/.gtest_kvdb.cpp.swp and /dev/null differ
diff --git a/kvdb/src/gtest_kvdb.cpp b/kvdb/src/gtest_kvdb.cpp
index b0070a82f958b1d5fa87b3c3563c882f85719501..4e7d0aca5ae778a17ed5a4040f6424ee96579c47 100644
--- a/kvdb/src/gtest_kvdb.cpp
+++ b/kvdb/src/gtest_kvdb.cpp
@@ -16,6 +16,7 @@
 #include "kvdb/kvdb_impl.h"
 #include "kvdb/paddle_rocksdb.h"
 #include <gtest/gtest.h>
+#include <functional>
 #include <string>
 #include <fstream>
 #include <chrono>
@@ -28,19 +29,19 @@ protected:
     
     static void SetUpTestCase() {
         kvdb = std::make_shared<RocksKVDB>();
-        dict_reader = std::make_shared<RocksDBDictReader>();
-        param_dict = std::make_shared<RocksDBParamDict>();
+        dict_reader = std::make_shared<FileReader>();
+        param_dict = std::make_shared<ParamDict>();
     }
     
     static AbsKVDBPtr kvdb;
-    static AbsDictReaderPtr dict_reader;
-    static AbsParamDictPtr param_dict;
+    static FileReaderPtr dict_reader;
+    static ParamDictPtr param_dict;
     static ParamDictMgr dict_mgr;
 
 };
 AbsKVDBPtr KVDBTest::kvdb;
-AbsDictReaderPtr KVDBTest::dict_reader;
-AbsParamDictPtr KVDBTest::param_dict;
+FileReaderPtr KVDBTest::dict_reader;
+ParamDictPtr KVDBTest::param_dict;
 ParamDictMgr KVDBTest::dict_mgr;
 
 void GenerateTestIn(std::string);
@@ -58,7 +59,7 @@ TEST_F(KVDBTest, AbstractKVDB_Unit_Test) {
     }
 }
 
-TEST_F(KVDBTest, AbstractDictReader_Unit_Test) {
+TEST_F(KVDBTest, FileReader_Unit_Test) {
     std::string test_in_filename = "abs_dict_reader_test_in.txt";
     GenerateTestIn(test_in_filename);
     dict_reader->SetFileName(test_in_filename);
@@ -81,9 +82,29 @@ TEST_F(KVDBTest, AbstractDictReader_Unit_Test) {
     ASSERT_NE(timestamp_2, timestamp_3);   
 }
 #include <cmath>
-TEST_F(KVDBTest, RocksDBParamDict_Unit_Test) {
+TEST_F(KVDBTest, ParamDict_Unit_Test) {
     std::string test_in_filename = "abs_dict_reader_test_in.txt";
-    param_dict->SetDictReaderLst({dict_reader});
+    param_dict->SetFileReaderLst({test_in_filename});
+    param_dict->SetReader(
+    [] (std::string text) {
+      auto split = [](const std::string& s,
+                 std::vector<std::string>& sv,
+                 const char* delim = " ") {
+        sv.clear();
+        char* buffer = new char[s.size() + 1];
+        std::copy(s.begin(), s.end(), buffer);
+        char* p = strtok(buffer, delim);
+        do {
+          sv.push_back(p);
+        } while ((p = strtok(NULL, delim)));
+        return;
+      };
+      std::vector<std::string> text_split;
+      split(text, text_split, " ");
+      std::string key = text_split[0];
+      text_split.erase(text_split.begin());
+      return make_pair(key, text_split);            
+    });
     param_dict->CreateKVDB();
     GenerateTestIn(test_in_filename);
 
@@ -91,7 +112,7 @@ TEST_F(KVDBTest, RocksDBParamDict_Unit_Test) {
 
     std::this_thread::sleep_for(std::chrono::seconds(2));
     
-    std::vector<float> test_vec = param_dict->GetSparseValue(1, 1);
+    std::vector<float> test_vec = param_dict->GetSparseValue("1", "");
 
     ASSERT_LT(fabs(test_vec[0] - 1.0), 1e-2);
 
diff --git a/kvdb/src/mock_param_dict_impl.cpp b/kvdb/src/mock_param_dict_impl.cpp
index 07f5b7b0304fb835f47d178c52529d3619059310..e1763b2b6bd1b668a3a2d3baa25ccdbbd63e95fe 100644
--- a/kvdb/src/mock_param_dict_impl.cpp
+++ b/kvdb/src/mock_param_dict_impl.cpp
@@ -16,74 +16,22 @@
 #include <thread>
 #include <iterator>
 #include <fstream>
+#include <algorithm>
 #include <sstream>
-std::string RocksDBDictReader::GetFileName() {
-    return this->filename_;
-}
-
-void RocksDBDictReader::SetFileName(std::string filename) {
-    this->filename_ = filename;
-    this->last_md5_val_ = this->GetMD5();
-    this->time_stamp_ = std::chrono::system_clock::now();
-}
-
-std::string RocksDBDictReader::GetMD5() {
-   auto getCmdOut = [] (std::string cmd) {
-        std::string data;
-        FILE *stream = nullptr;
-        const int max_buffer = 256;
-        char buffer[max_buffer];
-        cmd.append(" 2>&1");
-        stream = popen(cmd.c_str(), "r");
-        if (stream) {
-            if (fgets(buffer, max_buffer, stream) != NULL) {
-                data.append(buffer);
-            }
-        }
-        return data;
-   }; 
-    std::string cmd = "md5sum " + this->filename_;
-//TODO: throw exception if error occurs during execution of shell command
-    std::string md5val = getCmdOut(cmd);
-    this->time_stamp_ = md5val == this->last_md5_val_? this->time_stamp_: std::chrono::system_clock::now();
-    this->last_md5_val_ = md5val;
-    return md5val;
-}
 
-bool RocksDBDictReader::CheckDiff() {
-    return this->GetMD5() == this->last_md5_val_;
+std::vector<FileReaderPtr> ParamDict::GetDictReaderLst() {
+    return this->file_reader_lst_;
 }
 
-std::chrono::system_clock::time_point RocksDBDictReader::GetTimeStamp() {
-    return this->time_stamp_;  
-}
-
-void RocksDBDictReader::Read(AbstractParamDict* param_dict) {
-    std::string line;
-    std::ifstream infile(this->filename_);
-    if (infile.is_open()) {
-        while (getline(infile, line)) {
-            //TODO: Write String Parse Here
-            // param_dict->InsertSparseValue();
-        }
+void ParamDict::SetFileReaderLst(std::vector<std::string> lst) {
+    for (size_t i = 0; i < lst.size(); i++) {
+        FileReaderPtr fr = std::make_shared<FileReader>();
+        fr->SetFileName(lst[i]);
+        this->file_reader_lst_.push_back(fr);
     }
-    infile.close();
 }
 
-RocksDBDictReader::~RocksDBDictReader() {
-//TODO: I imageine nothing to do here
-}
-
-
-std::vector<AbsDictReaderPtr> RocksDBParamDict::GetDictReaderLst() {
-    return this->dict_reader_lst_;
-}
-
-void RocksDBParamDict::SetDictReaderLst(std::vector<AbsDictReaderPtr> lst) {
-    this->dict_reader_lst_ = lst;
-}
-
-std::vector<float> RocksDBParamDict::GetSparseValue(std::string feasign, std::string slot) {
+std::vector<float> ParamDict::GetSparseValue(std::string feasign, std::string slot) {
     auto BytesToFloat = [](uint8_t* byteArray){
         return *((float*)byteArray);
     };
@@ -100,15 +48,19 @@ std::vector<float> RocksDBParamDict::GetSparseValue(std::string feasign, std::st
     return value;
 }
 
-std::vector<float> RocksDBParamDict::GetSparseValue(int64_t feasign, int64_t slot) {
+void ParamDict::SetReader(std::function<std::pair<Key, Value>(std::string)> func) {
+    read_func_ = func;
+}
+
+std::vector<float> ParamDict::GetSparseValue(int64_t feasign, int64_t slot) {
     return this->GetSparseValue(std::to_string(feasign), std::to_string(slot));
 }
 
-bool RocksDBParamDict::InsertSparseValue(int64_t feasign, int64_t slot, const std::vector<float>& values) {
+bool ParamDict::InsertSparseValue(int64_t feasign, int64_t slot, const std::vector<float>& values) {
     return this->InsertSparseValue(std::to_string(feasign), std::to_string(slot), values);       
 }
 
-bool RocksDBParamDict::InsertSparseValue(std::string feasign, std::string slot, const std::vector<float>& values) {
+bool ParamDict::InsertSparseValue(std::string feasign, std::string slot, const std::vector<float>& values) {
     auto FloatToBytes = [](float fvalue, uint8_t *arr){
         unsigned char  *pf = nullptr;
         unsigned char *px = nullptr;
@@ -136,23 +88,29 @@ bool RocksDBParamDict::InsertSparseValue(std::string feasign, std::string slot,
     return true;
 }
 
-void RocksDBParamDict::UpdateBaseModel() {
+void ParamDict::UpdateBaseModel() {
+    auto is_number = [] (const std::string& s)
+    {
+        return !s.empty() && std::find_if(s.begin(), 
+                        s.end(), [](char c) { return !std::isdigit(c); }) == s.end();
+    };
    std::thread t([&] () {
-        for (AbsDictReaderPtr dict_reader: this->dict_reader_lst_) {
-            if (dict_reader->CheckDiff()) {
-                std::vector<std::string> strs;
-                dict_reader->Read(this);
-                for (const std::string& str: strs) {
-                    std::vector<std::string> arr;
-                    std::istringstream in(str);
-                    copy(std::istream_iterator<std::string>(in), std::istream_iterator<std::string>(), back_inserter(arr));
+        for (FileReaderPtr file_reader: this->file_reader_lst_) {
+            std::string line;
+            std::ifstream infile(file_reader->GetFileName());
+            if (infile.is_open()) {
+                while (getline(infile, line)) {
+                    std::pair<Key, Value> kvpair = read_func_(line);
                     std::vector<float> nums;
-                    for (size_t i = 2; i < arr.size(); i++) {
-                        nums.push_back(std::stof(arr[i]));
+                    for (size_t i = 0; i < kvpair.second.size(); i++) {
+                        if (is_number(kvpair.second[i])) {
+                            nums.push_back(std::stof(kvpair.second[i]));
+                        }
                     }
-                    this->InsertSparseValue(arr[0], arr[1], nums);
+                    this->InsertSparseValue(kvpair.first, "", nums);
                 }
             }
+            infile.close();
         }
         AbsKVDBPtr temp = front_db;
         front_db = back_db;
@@ -162,27 +120,27 @@ void RocksDBParamDict::UpdateBaseModel() {
 }
 
 
-void RocksDBParamDict::UpdateDeltaModel() {
+void ParamDict::UpdateDeltaModel() {
     UpdateBaseModel();
 }
 
-std::pair<AbsKVDBPtr, AbsKVDBPtr> RocksDBParamDict::GetKVDB()  {
+std::pair<AbsKVDBPtr, AbsKVDBPtr> ParamDict::GetKVDB()  {
     return {front_db, back_db};
 }
 
-void RocksDBParamDict::SetKVDB(std::pair<AbsKVDBPtr, AbsKVDBPtr> kvdbs) {
+void ParamDict::SetKVDB(std::pair<AbsKVDBPtr, AbsKVDBPtr> kvdbs) {
     this->front_db = kvdbs.first;
     this->back_db = kvdbs.second;
 }
 
-void RocksDBParamDict::CreateKVDB() {
+void ParamDict::CreateKVDB() {
     this->front_db = std::make_shared<RocksKVDB>();
     this->back_db = std::make_shared<RocksKVDB>();
     this->front_db->CreateDB();
     this->back_db->CreateDB();
 }
 
-RocksDBParamDict::~RocksDBParamDict() {
+ParamDict::~ParamDict() {
 
 }
 
diff --git a/kvdb/src/param_dict_mgr_impl.cpp b/kvdb/src/param_dict_mgr_impl.cpp
index 0ee37f42342fcf1d51f8a7538b8bc0e1e93f495b..67fd8744fe8dfb0ebe028650506432e5f5ac3186 100644
--- a/kvdb/src/param_dict_mgr_impl.cpp
+++ b/kvdb/src/param_dict_mgr_impl.cpp
@@ -21,10 +21,8 @@ void ParamDictMgr::UpdateAll() {
 
 }
 
-void ParamDictMgr::InsertParamDict(std::string key, AbsParamDictPtr value) {
+void ParamDictMgr::InsertParamDict(std::string key, ParamDictPtr value) {
     this->ParamDictMap.insert(std::make_pair(key, value));
 }
 
 AbstractKVDB::~AbstractKVDB() {}
-AbstractDictReader::~AbstractDictReader() {}
-AbstractParamDict::~AbstractParamDict() {}