diff --git a/build.gradle b/build.gradle
index ac45b78..a3d805f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -16,7 +16,7 @@ configurations {
 }
 
 repositories {
-    mavenCentral()
+    jcenter()
 }
 
 dependencies {
@@ -31,8 +31,11 @@ dependencies {
     testImplementation 'org.junit.jupiter:junit-jupiter-engine:5.0.1'
     testImplementation 'org.mockito:mockito-junit-jupiter:2.23.0'
     testImplementation 'com.tngtech.archunit:archunit:0.9.3'
+    testImplementation 'de.adesso:junit-insights:1.1.0'
+    testImplementation 'org.junit.platform:junit-platform-launcher:1.4.2'
 }
 
 test {
     useJUnitPlatform()
+    systemProperty 'de.adesso.junitinsights.enabled', 'true'
 }
diff --git a/src/demo/PersistenceAdapterTestConfiguration.java b/src/demo/PersistenceAdapterTestConfiguration.java
new file mode 100644
index 0000000..dc324e9
--- /dev/null
+++ b/src/demo/PersistenceAdapterTestConfiguration.java
@@ -0,0 +1,11 @@
+package io.reflectoring.reviewapp.adapter.persistence;
+
+import org.springframework.boot.SpringBootConfiguration;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.context.annotation.Import;
+
+//@SpringBootConfiguration
+//@EnableAutoConfiguration
+//@Import(PersistenceAdapterConfiguration.class)
+public class PersistenceAdapterTestConfiguration {
+}
diff --git a/src/demo/morepersistence/AnotherEntity.java b/src/demo/morepersistence/AnotherEntity.java
new file mode 100644
index 0000000..1cb5728
--- /dev/null
+++ b/src/demo/morepersistence/AnotherEntity.java
@@ -0,0 +1,4 @@
+package io.reflectoring.reviewapp.adapter.morepersistence;
+
+public class AnotherEntity {
+}
diff --git a/src/demo/morepersistence/AnotherPersistenceAdapter.java b/src/demo/morepersistence/AnotherPersistenceAdapter.java
new file mode 100644
index 0000000..c389d2e
--- /dev/null
+++ b/src/demo/morepersistence/AnotherPersistenceAdapter.java
@@ -0,0 +1,13 @@
+package io.reflectoring.reviewapp.adapter.morepersistence;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+class AnotherPersistenceAdapter {
+
+  private final CrudRepository<AnotherEntity, Long> anotherRepository;
+
+}
diff --git a/src/main/java/io/reflectoring/reviewapp/adapter/persistence/BookPersistenceAdapter.java b/src/main/java/io/reflectoring/reviewapp/adapter/persistence/BookPersistenceAdapter.java
index 5d14788..bd345e6 100644
--- a/src/main/java/io/reflectoring/reviewapp/adapter/persistence/BookPersistenceAdapter.java
+++ b/src/main/java/io/reflectoring/reviewapp/adapter/persistence/BookPersistenceAdapter.java
@@ -2,13 +2,14 @@ package io.reflectoring.reviewapp.adapter.persistence;
 
 import io.reflectoring.reviewapp.application.port.out.FindBookByTitlePort;
 import io.reflectoring.reviewapp.application.port.out.PersistBookPort;
+import io.reflectoring.reviewapp.common.PersistenceAdapter;
 import io.reflectoring.reviewapp.domain.Book;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Component;
 
 import java.util.Optional;
 
-@Component
+@PersistenceAdapter
 @RequiredArgsConstructor
 class BookPersistenceAdapter implements FindBookByTitlePort, PersistBookPort {
 
diff --git a/src/main/resources/io/reflectoring/reviewapp/adapter/persistence/single-author-reset.sql b/src/main/resources/io/reflectoring/reviewapp/adapter/persistence/single-author-reset.sql
new file mode 100644
index 0000000..c029384
--- /dev/null
+++ b/src/main/resources/io/reflectoring/reviewapp/adapter/persistence/single-author-reset.sql
@@ -0,0 +1,3 @@
+DELETE
+FROM AUTHOR
+WHERE ID = 42;
\ No newline at end of file
diff --git a/src/main/resources/io/reflectoring/reviewapp/adapter/persistence/single-author.sql b/src/main/resources/io/reflectoring/reviewapp/adapter/persistence/single-author.sql
new file mode 100644
index 0000000..750d269
--- /dev/null
+++ b/src/main/resources/io/reflectoring/reviewapp/adapter/persistence/single-author.sql
@@ -0,0 +1,2 @@
+INSERT INTO AUTHOR (ID, NAME)
+VALUES (42, 'Tom');
\ No newline at end of file
diff --git a/src/test/java/io/reflectoring/reviewapp/adapter/persistence/AuthorPersistenceAdapterTest.java b/src/test/java/io/reflectoring/reviewapp/adapter/persistence/AuthorPersistenceAdapterTest.java
new file mode 100644
index 0000000..48e0990
--- /dev/null
+++ b/src/test/java/io/reflectoring/reviewapp/adapter/persistence/AuthorPersistenceAdapterTest.java
@@ -0,0 +1,28 @@
+package io.reflectoring.reviewapp.adapter.persistence;
+
+import io.reflectoring.reviewapp.domain.Author;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.jdbc.Sql;
+import org.springframework.test.context.jdbc.Sql.ExecutionPhase;
+import org.springframework.test.context.jdbc.SqlGroup;
+
+import static org.assertj.core.api.Assertions.*;
+
+@SpringBootTest
+class AuthorPersistenceAdapterTest {
+
+  @Autowired
+  private AuthorPersistenceAdapter authorPersistenceAdapter;
+
+  @Test
+  @SqlGroup({
+          @Sql(scripts = "single-author.sql", executionPhase = ExecutionPhase.BEFORE_TEST_METHOD),
+          @Sql(scripts = "single-author-reset.sql", executionPhase = ExecutionPhase.AFTER_TEST_METHOD)})
+  void findByAuthorId() {
+    Author author = authorPersistenceAdapter.findAuthorById(42L);
+    assertThat(author).isNotNull();
+  }
+
+}
\ No newline at end of file