diff --git a/spring-cloud/spring-cloud-bootstrap/svc-book/src/main/java/com/baeldung/spring/cloud/bootstrap/svcbook/book/BookController.java b/spring-cloud/spring-cloud-bootstrap/svc-book/src/main/java/com/baeldung/spring/cloud/bootstrap/svcbook/book/BookController.java
index d00f114b8c..192f9c2342 100644
--- a/spring-cloud/spring-cloud-bootstrap/svc-book/src/main/java/com/baeldung/spring/cloud/bootstrap/svcbook/book/BookController.java
+++ b/spring-cloud/spring-cloud-bootstrap/svc-book/src/main/java/com/baeldung/spring/cloud/bootstrap/svcbook/book/BookController.java
@@ -1,11 +1,19 @@
 package com.baeldung.spring.cloud.bootstrap.svcbook.book;
 
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.web.bind.annotation.*;
-
 import java.util.List;
 import java.util.Map;
 
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
 @RestController
 @RequestMapping("/books")
 public class BookController {
@@ -13,7 +21,7 @@ public class BookController {
     @Autowired
     private BookService bookService;
 
-    @GetMapping("")
+    @GetMapping
     public List<Book> findAllBooks() {
         return bookService.findAllBooks();
     }
@@ -23,7 +31,7 @@ public class BookController {
         return bookService.findBookById(bookId);
     }
 
-    @PostMapping("")
+    @PostMapping
     public Book createBook(@RequestBody Book book) {
         return bookService.createBook(book);
     }
@@ -33,7 +41,12 @@ public class BookController {
         bookService.deleteBook(bookId);
     }
 
-    @PatchMapping("/{bookId")
+    @PutMapping("/{bookId}")
+    public Book updateBook(@RequestBody Book book, @PathVariable Long bookId) {
+        return bookService.updateBook(book, bookId);
+    }
+
+    @PatchMapping("/{bookId}")
     public Book updateBook(@RequestBody Map<String, String> updates, @PathVariable Long bookId) {
         return bookService.updateBook(updates, bookId);
     }
diff --git a/spring-cloud/spring-cloud-bootstrap/svc-book/src/main/java/com/baeldung/spring/cloud/bootstrap/svcbook/book/BookService.java b/spring-cloud/spring-cloud-bootstrap/svc-book/src/main/java/com/baeldung/spring/cloud/bootstrap/svcbook/book/BookService.java
index cfcbf15757..106fdad5d9 100644
--- a/spring-cloud/spring-cloud-bootstrap/svc-book/src/main/java/com/baeldung/spring/cloud/bootstrap/svcbook/book/BookService.java
+++ b/spring-cloud/spring-cloud-bootstrap/svc-book/src/main/java/com/baeldung/spring/cloud/bootstrap/svcbook/book/BookService.java
@@ -1,13 +1,15 @@
 package com.baeldung.spring.cloud.bootstrap.svcbook.book;
 
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Propagation;
 import org.springframework.transaction.annotation.Transactional;
 
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
+import com.google.common.base.Preconditions;
 
 @Service
 @Transactional(readOnly = true)
@@ -27,7 +29,7 @@ public class BookService {
 
     @Transactional(propagation = Propagation.REQUIRED)
     public Book createBook(Book book) {
-        Book newBook = new Book();
+        final Book newBook = new Book();
         newBook.setTitle(book.getTitle());
         newBook.setAuthor(book.getAuthor());
         return bookRepository.save(newBook);
@@ -40,16 +42,25 @@ public class BookService {
 
     @Transactional(propagation = Propagation.REQUIRED)
     public Book updateBook(Map<String, String> updates, Long bookId) {
-        Book book = findBookById(bookId);
-        updates.keySet().forEach(key -> {
-            switch (key) {
-            case "author":
-                book.setAuthor(updates.get(key));
-                break;
-            case "title":
-                book.setTitle(updates.get(key));
-            }
-        });
+        final Book book = findBookById(bookId);
+        updates.keySet()
+            .forEach(key -> {
+                switch (key) {
+                case "author":
+                    book.setAuthor(updates.get(key));
+                    break;
+                case "title":
+                    book.setTitle(updates.get(key));
+                }
+            });
+        return bookRepository.save(book);
+    }
+
+    @Transactional(propagation = Propagation.REQUIRED)
+    public Book updateBook(Book book, Long bookId) {
+        Preconditions.checkNotNull(book);
+        Preconditions.checkState(book.getId() == bookId);
+        Preconditions.checkNotNull(bookRepository.findOne(bookId));
         return bookRepository.save(book);
     }
 }
diff --git a/spring-cloud/spring-cloud-bootstrap/svc-rating/src/main/java/com/baeldung/spring/cloud/bootstrap/svcrating/rating/RatingController.java b/spring-cloud/spring-cloud-bootstrap/svc-rating/src/main/java/com/baeldung/spring/cloud/bootstrap/svcrating/rating/RatingController.java
index 83452ad747..cbfeda49c0 100644
--- a/spring-cloud/spring-cloud-bootstrap/svc-rating/src/main/java/com/baeldung/spring/cloud/bootstrap/svcrating/rating/RatingController.java
+++ b/spring-cloud/spring-cloud-bootstrap/svc-rating/src/main/java/com/baeldung/spring/cloud/bootstrap/svcrating/rating/RatingController.java
@@ -1,11 +1,20 @@
 package com.baeldung.spring.cloud.bootstrap.svcrating.rating;
 
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.web.bind.annotation.*;
-
 import java.util.List;
 import java.util.Map;
 
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
 @RestController
 @RequestMapping("/ratings")
 public class RatingController {
@@ -13,7 +22,7 @@ public class RatingController {
     @Autowired
     private RatingService ratingService;
 
-    @GetMapping("")
+    @GetMapping
     public List<Rating> findRatingsByBookId(@RequestParam(required = false, defaultValue = "0") Long bookId) {
         if (bookId.equals(0L)) {
             return ratingService.findAllRatings();
@@ -21,7 +30,7 @@ public class RatingController {
         return ratingService.findRatingsByBookId(bookId);
     }
 
-    @PostMapping("")
+    @PostMapping
     public Rating createRating(@RequestBody Rating rating) {
         return ratingService.createRating(rating);
     }
@@ -31,7 +40,12 @@ public class RatingController {
         ratingService.deleteRating(ratingId);
     }
 
-    @PatchMapping("/{ratingId")
+    @PutMapping("/{ratingId}")
+    public Rating updateRating(@RequestBody Rating rating, @PathVariable Long ratingId) {
+        return ratingService.updateRating(rating, ratingId);
+    }
+
+    @PatchMapping("/{ratingId}")
     public Rating updateRating(@RequestBody Map<String, String> updates, @PathVariable Long ratingId) {
         return ratingService.updateRating(updates, ratingId);
     }
diff --git a/spring-cloud/spring-cloud-bootstrap/svc-rating/src/main/java/com/baeldung/spring/cloud/bootstrap/svcrating/rating/RatingService.java b/spring-cloud/spring-cloud-bootstrap/svc-rating/src/main/java/com/baeldung/spring/cloud/bootstrap/svcrating/rating/RatingService.java
index a2360b7be5..b05d7e2f1f 100644
--- a/spring-cloud/spring-cloud-bootstrap/svc-rating/src/main/java/com/baeldung/spring/cloud/bootstrap/svcrating/rating/RatingService.java
+++ b/spring-cloud/spring-cloud-bootstrap/svc-rating/src/main/java/com/baeldung/spring/cloud/bootstrap/svcrating/rating/RatingService.java
@@ -1,13 +1,15 @@
 package com.baeldung.spring.cloud.bootstrap.svcrating.rating;
 
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Propagation;
 import org.springframework.transaction.annotation.Transactional;
 
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
+import com.google.common.base.Preconditions;
 
 @Service
 @Transactional(readOnly = true)
@@ -31,7 +33,7 @@ public class RatingService {
 
     @Transactional(propagation = Propagation.REQUIRED)
     public Rating createRating(Rating rating) {
-        Rating newRating = new Rating();
+        final Rating newRating = new Rating();
         newRating.setBookId(rating.getBookId());
         newRating.setStars(rating.getStars());
         return ratingRepository.save(newRating);
@@ -44,14 +46,22 @@ public class RatingService {
 
     @Transactional(propagation = Propagation.REQUIRED)
     public Rating updateRating(Map<String, String> updates, Long ratingId) {
-        Rating rating = findRatingById(ratingId);
-        updates.keySet().forEach(key -> {
-            switch (key) {
+        final Rating rating = findRatingById(ratingId);
+        updates.keySet()
+            .forEach(key -> {
+                switch (key) {
                 case "stars":
                     rating.setStars(Integer.parseInt(updates.get(key)));
                     break;
-            }
-        });
+                }
+            });
+        return ratingRepository.save(rating);
+    }
+
+    public Rating updateRating(Rating rating, Long ratingId) {
+        Preconditions.checkNotNull(rating);
+        Preconditions.checkState(rating.getId() == ratingId);
+        Preconditions.checkNotNull(ratingRepository.findOne(ratingId));
         return ratingRepository.save(rating);
     }
 }