diff --git a/services/backup/docker-server/contents/server/CMakeLists.txt b/services/backup/docker-server/contents/server/CMakeLists.txt
index 6002419cf..65f9008f0 100644
--- a/services/backup/docker-server/contents/server/CMakeLists.txt
+++ b/services/backup/docker-server/contents/server/CMakeLists.txt
@@ -1,124 +1,125 @@
 PROJECT(backup C CXX)
 
 cmake_minimum_required(VERSION 3.16)
 
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY bin)
 
 if(COMMAND cmake_policy)
   cmake_policy(SET CMP0003 NEW)
 endif(COMMAND cmake_policy)
 
 set(CMAKE_CXX_STANDARD 17)
 
 set(BUILD_TESTING OFF CACHE BOOL "Turn off tests" FORCE)
 set(WITH_GTEST "Use Google Test" OFF)
 
 # FIND LIBS
 include(./cmake-components/grpc.cmake)
 include(./cmake-components/folly.cmake)
 add_subdirectory(./lib/glog)
 find_package(AWSSDK REQUIRED COMPONENTS core dynamodb)
 find_package(Boost 1.40 COMPONENTS program_options REQUIRED)
 
 # FIND FILES
 file(GLOB DOUBLE_CONVERSION_SOURCES "./lib/double-conversion/double-conversion/*.cc")
 
 if ($ENV{COMM_TEST_SERVICES} MATCHES 1)
   add_compile_definitions(COMM_TEST_SERVICES)
 endif()
 
 file(GLOB GENERATED_CODE "./_generated/*.cc")
 set(DEV_SOURCE_CODE "")
 set(DEV_HEADERS_PATH "")
 if ($ENV{COMM_SERVICES_DEV_MODE} MATCHES 1)
   add_compile_definitions(COMM_SERVICES_DEV_MODE)
   file(GLOB DEV_SOURCE_CODE "./dev/*.cpp" "./src/*.dev.cpp")
   set(DEV_HEADERS_PATH "./dev")
 endif()
 
 file(GLOB SOURCE_CODE "./src/*.cpp" "./src/**/*.cpp")
 list(FILTER SOURCE_CODE EXCLUDE REGEX ".*.dev.cpp$")
 
 foreach (ITEM ${DEV_SOURCE_CODE})
   string(REPLACE "/" ";" SPLIT_ITEM ${ITEM})
   list(GET SPLIT_ITEM -1 FILE_FULL_NAME)
   string(REPLACE ".dev.cpp" ".cpp" FILE_NAME ${FILE_FULL_NAME})
   list(FILTER SOURCE_CODE EXCLUDE REGEX ".*${FILE_NAME}$")
   list(APPEND SOURCE_CODE "${ITEM}")
 endforeach()
 
 include_directories(
   ./src
   ./src/DatabaseEntities
+  ./src/Reactors
   ./_generated
   ${FOLLY_INCLUDES}
   ./lib/double-conversion
   ${Boost_INCLUDE_DIR}
   ${DEV_HEADERS_PATH}
 )
 
 # SERVER
 add_executable(
   backup
   
   ${GENERATED_CODE}
   ${DOUBLE_CONVERSION_SOURCES}
   ${FOLLY_SOURCES}
   
   ${SOURCE_CODE}
 )
 
 set(
   LIBS
 
   ${GRPC_LIBS}
   ${AWSSDK_LINK_LIBRARIES}
   ${Boost_LIBRARIES}
   glog::glog
 )
 
 target_link_libraries(
   backup
 
   ${LIBS}
 )
 
 install(
   TARGETS backup
   RUNTIME DESTINATION bin/
 )
 
 # TEST
 if ($ENV{COMM_TEST_SERVICES} MATCHES 1)
   file(GLOB TEST_CODE "./test/*.cpp")
   list(FILTER SOURCE_CODE EXCLUDE REGEX "./src/server.cpp")
   enable_testing()
 
   find_package(GTest REQUIRED)
   include_directories(
     ${GTEST_INCLUDE_DIR}
     ./test
   )
 
   add_executable(
     runTests
 
     ${GENERATED_CODE}
     ${DOUBLE_CONVERSION_SOURCES}
     ${FOLLY_SOURCES}
     ${SOURCE_CODE}
     ${TEST_CODE}
   )
   target_link_libraries(
     runTests
 
     ${LIBS}
     gtest
     gtest_main
   )
 
   add_test(
     NAME runTests
     COMMAND runTests
   )
 endif()
diff --git a/services/backup/docker-server/contents/server/src/Reactors/BidiReactorBase.h b/services/backup/docker-server/contents/server/src/Reactors/BidiReactorBase.h
new file mode 100644
index 000000000..082d2d749
--- /dev/null
+++ b/services/backup/docker-server/contents/server/src/Reactors/BidiReactorBase.h
@@ -0,0 +1,68 @@
+#pragma once
+
+#include <grpcpp/grpcpp.h>
+#include <iostream>
+#include <memory>
+#include <string>
+
+namespace comm {
+namespace network {
+
+template <class Request, class Response>
+class BidiReactorBase : public grpc::ServerBidiReactor<Request, Response> {
+  Request request;
+  Response response;
+
+public:
+  BidiReactorBase();
+
+  void OnDone() override;
+  void OnReadDone(bool ok) override;
+  void OnWriteDone(bool ok) override;
+
+  virtual std::unique_ptr<grpc::Status>
+  handleRequest(Request request, Response *response) = 0;
+};
+
+template <class Request, class Response>
+BidiReactorBase<Request, Response>::BidiReactorBase() {
+  this->StartRead(&this->request);
+}
+
+template <class Request, class Response>
+void BidiReactorBase<Request, Response>::OnDone() {
+  delete this;
+}
+
+template <class Request, class Response>
+void BidiReactorBase<Request, Response>::OnReadDone(bool ok) {
+  if (!ok) {
+    this->Finish(
+        grpc::Status(grpc::StatusCode::INTERNAL, "OnReadDone: reading error"));
+    return;
+  }
+  this->response = Response();
+  try {
+    std::unique_ptr<grpc::Status> status =
+        this->handleRequest(this->request, &this->response);
+    if (status != nullptr) {
+      this->Finish(*status);
+      return;
+    }
+    this->StartWrite(&this->response);
+  } catch (std::runtime_error &e) {
+    this->Finish(grpc::Status(grpc::StatusCode::INTERNAL, e.what()));
+  }
+}
+
+template <class Request, class Response>
+void BidiReactorBase<Request, Response>::OnWriteDone(bool ok) {
+  if (!ok) {
+    std::cout << "Server write failed" << std::endl;
+    return;
+  }
+  this->StartRead(&this->request);
+}
+
+} // namespace network
+} // namespace comm
diff --git a/services/backup/docker-server/contents/server/src/Reactors/ReadReactorBase.h b/services/backup/docker-server/contents/server/src/Reactors/ReadReactorBase.h
new file mode 100644
index 000000000..4b8776d01
--- /dev/null
+++ b/services/backup/docker-server/contents/server/src/Reactors/ReadReactorBase.h
@@ -0,0 +1,59 @@
+#pragma once
+
+#include <grpcpp/grpcpp.h>
+#include <iostream>
+#include <memory>
+#include <string>
+
+namespace comm {
+namespace network {
+
+template <class Request, class Response>
+class ReadReactorBase : public grpc::ServerReadReactor<Request> {
+  Request request;
+
+protected:
+  Response *response;
+
+public:
+  ReadReactorBase(Response *response);
+
+  void OnDone() override;
+  void OnReadDone(bool ok) override;
+
+  virtual std::unique_ptr<grpc::Status> readRequest(Request request) = 0;
+};
+
+template <class Request, class Response>
+ReadReactorBase<Request, Response>::ReadReactorBase(Response *response)
+    : response(response) {
+  this->StartRead(&this->request);
+}
+
+template <class Request, class Response>
+void ReadReactorBase<Request, Response>::OnDone() {
+  delete this;
+}
+
+template <class Request, class Response>
+void ReadReactorBase<Request, Response>::OnReadDone(bool ok) {
+  if (!ok) {
+    this->Finish(
+        grpc::Status(grpc::StatusCode::INTERNAL, "OnReadDone: reading error"));
+    return;
+  }
+  try {
+    std::unique_ptr<grpc::Status> status = this->readRequest(this->request);
+    if (status != nullptr) {
+      this->Finish(*status);
+      return;
+    }
+  } catch (std::runtime_error &e) {
+    this->Finish(grpc::Status(grpc::StatusCode::INTERNAL, e.what()));
+    return;
+  }
+  this->StartRead(&this->request);
+}
+
+} // namespace network
+} // namespace comm
diff --git a/services/backup/docker-server/contents/server/src/Reactors/WriteReactorBase.h b/services/backup/docker-server/contents/server/src/Reactors/WriteReactorBase.h
new file mode 100644
index 000000000..d18fd5629
--- /dev/null
+++ b/services/backup/docker-server/contents/server/src/Reactors/WriteReactorBase.h
@@ -0,0 +1,69 @@
+#pragma once
+
+#include <grpcpp/grpcpp.h>
+#include <iostream>
+#include <memory>
+#include <string>
+
+namespace comm {
+namespace network {
+
+template <class Request, class Response>
+class WriteReactorBase : public grpc::ServerWriteReactor<Response> {
+  Response response;
+
+protected:
+  // this is a const ref since it's not meant to be modified
+  const Request &request;
+
+public:
+  WriteReactorBase(const Request *request);
+
+  virtual void NextWrite();
+  void OnDone() override;
+  void OnWriteDone(bool ok) override;
+
+  virtual std::unique_ptr<grpc::Status> writeResponse(Response *response) = 0;
+};
+
+template <class Request, class Response>
+WriteReactorBase<Request, Response>::WriteReactorBase(const Request *request)
+    : request(*request) {
+  // we cannot call this->NextWrite() here because it's going to call it on
+  // the base class, not derived leading to the runtime error of calling
+  // a pure virtual function
+  // NextWrite has to be exposed as a public function and called explicitly
+  // to initialize writing
+}
+
+template <class Request, class Response>
+void WriteReactorBase<Request, Response>::NextWrite() {
+  this->response = Response();
+  std::unique_ptr<grpc::Status> status = this->writeResponse(&this->response);
+  if (status != nullptr) {
+    this->Finish(*status);
+    return;
+  }
+  this->StartWrite(&this->response);
+}
+
+template <class Request, class Response>
+void WriteReactorBase<Request, Response>::OnDone() {
+  delete this;
+}
+
+template <class Request, class Response>
+void WriteReactorBase<Request, Response>::OnWriteDone(bool ok) {
+  if (!ok) {
+    this->Finish(grpc::Status(grpc::StatusCode::INTERNAL, "writing error"));
+    return;
+  }
+  try {
+    this->NextWrite();
+  } catch (std::runtime_error &e) {
+    this->Finish(grpc::Status(grpc::StatusCode::INTERNAL, e.what()));
+  }
+}
+
+} // namespace network
+} // namespace comm