diff --git a/.gitignore b/.gitignore
index a6401b1..fb5fc05 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,3 +32,4 @@ build/
 ### VS Code ###
 .vscode/
 /hs_err_pid**.log
+/truffle.log
diff --git a/src/main/java/quant/rich/emoney/mapper/postgre/StockStrategyMapper.java b/src/main/java/quant/rich/emoney/mapper/postgre/StockStrategyMapper.java
new file mode 100644
index 0000000..b1a7ce4
--- /dev/null
+++ b/src/main/java/quant/rich/emoney/mapper/postgre/StockStrategyMapper.java
@@ -0,0 +1,17 @@
+package quant.rich.emoney.mapper.postgre;
+
+import org.apache.ibatis.annotations.Mapper;
+import org.springframework.stereotype.Component;
+
+import com.baomidou.dynamic.datasource.annotation.DS;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+
+import quant.rich.emoney.entity.postgre.EmoneyIndex;
+import quant.rich.emoney.entity.postgre.StockStrategy;
+
+@Component
+@Mapper
+@DS("postgre")
+public interface StockStrategyMapper extends BaseMapper<StockStrategy> {
+
+}
diff --git a/src/main/java/quant/rich/emoney/service/postgre/PostgreServiceImpl.java b/src/main/java/quant/rich/emoney/service/postgre/PostgreServiceImpl.java
new file mode 100644
index 0000000..20cc19f
--- /dev/null
+++ b/src/main/java/quant/rich/emoney/service/postgre/PostgreServiceImpl.java
@@ -0,0 +1,90 @@
+package quant.rich.emoney.service.postgre;
+
+import java.util.Collection;
+
+import org.springframework.transaction.annotation.Transactional;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+
+import quant.rich.emoney.config.PostgreMybatisConfig;
+
+/**
+ * 使用 PostgreSQL 存储数据的 ServiceImpl，重写了部分使用 Transactional 的方法
+ */
+public abstract class PostgreServiceImpl<M extends BaseMapper<T>, T> extends ServiceImpl<M, T> {
+
+    @Transactional(transactionManager = PostgreMybatisConfig.POSTGRE_TRANSACTION_MANAGER, rollbackFor = Exception.class)
+    @Override
+    public boolean saveBatch(Collection<T> entityList) {
+        return super.saveBatch(entityList);
+    }
+
+    @Transactional(transactionManager = PostgreMybatisConfig.POSTGRE_TRANSACTION_MANAGER, rollbackFor = Exception.class)
+    @Override
+    public boolean saveBatch(Collection<T> entityList, int batchSize) {
+        return super.saveBatch(entityList, batchSize);
+    }
+    
+    @Override
+    @Transactional(transactionManager = PostgreMybatisConfig.POSTGRE_TRANSACTION_MANAGER, rollbackFor = Exception.class)
+    public boolean saveOrUpdateBatch(Collection<T> entityList) {
+        return super.saveOrUpdateBatch(entityList);
+    }
+    
+    @Transactional(transactionManager = PostgreMybatisConfig.POSTGRE_TRANSACTION_MANAGER, rollbackFor = Exception.class)
+    @Override
+    public boolean saveOrUpdateBatch(Collection<T> entityList, int batchSize) {
+        return super.saveOrUpdateBatch(entityList, batchSize);
+    }
+    
+    @Transactional(transactionManager = PostgreMybatisConfig.POSTGRE_TRANSACTION_MANAGER,rollbackFor = Exception.class)
+    @Override
+    public boolean updateBatchById(Collection<T> entityList, int batchSize) {
+        return super.updateBatchById(entityList, batchSize);
+    }
+    
+    @Override
+    @Transactional(transactionManager = PostgreMybatisConfig.POSTGRE_TRANSACTION_MANAGER,rollbackFor = Exception.class)
+    public boolean removeByIds(Collection<?> list) {
+        return super.removeByIds(list);
+    }
+    
+    @Override
+    @Transactional(transactionManager = PostgreMybatisConfig.POSTGRE_TRANSACTION_MANAGER,rollbackFor = Exception.class)
+    public boolean removeByIds(Collection<?> list, boolean useFill) {
+        return super.removeByIds(list, useFill);
+    }
+    
+    @Override
+    @Transactional(transactionManager = PostgreMybatisConfig.POSTGRE_TRANSACTION_MANAGER,rollbackFor = Exception.class)
+    public boolean removeBatchByIds(Collection<?> list) {
+        return super.removeBatchByIds(list, DEFAULT_BATCH_SIZE);
+    }
+    
+    @Override
+    @Transactional(transactionManager = PostgreMybatisConfig.POSTGRE_TRANSACTION_MANAGER,rollbackFor = Exception.class)
+    public boolean removeBatchByIds(Collection<?> list, int batchSize) {
+        return super.removeBatchByIds(list, batchSize);
+    }
+
+    @Override
+    @Transactional(transactionManager = PostgreMybatisConfig.POSTGRE_TRANSACTION_MANAGER,rollbackFor = Exception.class)
+    public boolean removeBatchByIds(Collection<?> list, int batchSize, boolean useFill) {
+        return super.removeBatchByIds(list, batchSize, useFill);
+    }
+    
+    @Override
+    @Transactional(transactionManager = PostgreMybatisConfig.POSTGRE_TRANSACTION_MANAGER,rollbackFor = Exception.class)
+    public boolean removeBatchByIds(Collection<?> list, boolean useFill) {
+        return super.removeBatchByIds(list, useFill);
+    }
+    
+    @Override
+    @Transactional(transactionManager = PostgreMybatisConfig.POSTGRE_TRANSACTION_MANAGER,rollbackFor = Exception.class)
+    public boolean updateBatchById(Collection<T> entityList) {
+        return super.updateBatchById(entityList);
+    }
+    
+    
+}
diff --git a/src/main/java/quant/rich/emoney/service/postgre/StockStrategyService.java b/src/main/java/quant/rich/emoney/service/postgre/StockStrategyService.java
new file mode 100644
index 0000000..2ac79e1
--- /dev/null
+++ b/src/main/java/quant/rich/emoney/service/postgre/StockStrategyService.java
@@ -0,0 +1,15 @@
+package quant.rich.emoney.service.postgre;
+
+import org.springframework.stereotype.Service;
+import com.baomidou.dynamic.datasource.annotation.DS;
+
+import quant.rich.emoney.entity.postgre.StockStrategy;
+import quant.rich.emoney.mapper.postgre.StockStrategyMapper;
+
+@DS("postgre")
+@Service
+public class StockStrategyService extends PostgreServiceImpl<StockStrategyMapper, StockStrategy> {
+    
+    
+    
+}
diff --git a/src/main/resources/only-one-default-true-in-sqlite3-datatable-trigger.md b/src/main/resources/only-one-default-true-in-sqlite3-datatable-trigger.md
new file mode 100644
index 0000000..87ff934
--- /dev/null
+++ b/src/main/resources/only-one-default-true-in-sqlite3-datatable-trigger.md
@@ -0,0 +1,2 @@
+## 使用触发器在 SQLite3 数据表内实现唯一的默认配置
+
diff --git a/src/test/resources/application-local.yml b/src/test/resources/application-local.yml
new file mode 100644
index 0000000..13553e9
--- /dev/null
+++ b/src/test/resources/application-local.yml
@@ -0,0 +1,20 @@
+spring:
+    datasource:
+        url: jdbc:postgresql://localhost:5432/verich
+        username: postgres
+        password: 123456
+        driver-class-name: org.postgresql.Driver
+        type: com.zaxxer.hikari.HikariDataSource
+        hikari:
+            minimum-idle: 5
+            connection-test-query: SELECT 1
+            maximum-pool-size: 2000
+            auto-commit: true
+            idle-timeout: 30000
+            pool-name: SpringBootDemoHikariCP
+            max-lifetime: 60000
+            connection-timeout: 30000
+    sql:
+        init:
+            mode: always
+            continue-on-error: true
\ No newline at end of file
diff --git a/src/test/resources/application-remote.yml b/src/test/resources/application-remote.yml
new file mode 100644
index 0000000..aa16fff
--- /dev/null
+++ b/src/test/resources/application-remote.yml
@@ -0,0 +1,29 @@
+spring:
+    cache.type: simple
+    datasource:
+        postgre:
+            jdbc-url: jdbc:postgresql://localhost:5432/verich
+            username: postgres
+            password: 123456
+            driver-class-name: org.postgresql.Driver
+            type: com.zaxxer.hikari.HikariDataSource
+            mapper-locations: classpath*:mapper/postgre/*.xml
+            type-aliases-package: quant.rich.emoney.entity.postgre
+            hikari:
+                minimum-idle: 5
+                connection-test-query: SELECT 1
+                maximum-pool-size: 2000
+                auto-commit: true
+                idle-timeout: 30000
+                pool-name: SpringBootDemoHikariCP
+                max-lifetime: 60000
+                connection-timeout: 30000
+        sqlite:
+            jdbc-url: jdbc:sqlite:E:/eclipse-workspace/emo-grab/src/main/resources/database.db
+            driver-class-name: org.sqlite.JDBC
+            mapper-locations: classpath*:mapper/sqlite/*.xml
+            type-aliases-package: quant.rich.emoney.entity.sqlite
+    sql:
+        init:
+            mode: always
+            continue-on-error: true