refactor(MemCachedSearchEmployee)

src/main/java/com/example/jonebook/services/search/MemCachedSearchEmployee.java

@@ -1,5 +1,7 @@
 package com.example.jonebook.services.search;
 
+import com.example.jonebook.entities.Employee;
+import com.example.jonebook.services.dto.EmployeeCriteria;
 import java.util.HashMap;
 import java.util.Map;
 import org.springframework.data.domain.Page;
@@ -8,26 +10,23 @@
 import org.springframework.lang.NonNull;
 import org.springframework.stereotype.Service;
 
-import com.example.jonebook.entities.Employee;
-import com.example.jonebook.services.dto.EmployeeCriteria;
-
 @Service
 public class MemCachedSearchEmployee implements SearchEmployee {
 
-    private final SearchEmployee origin;
-    private final Map<Pair<EmployeeCriteria, Pageable>, Page<Employee>> cache = new HashMap<>();
+  private final SearchEmployee origin;
+  private final Map<Pair<EmployeeCriteria, Pageable>, Page<Employee>> cache =
+      new HashMap<>();
 
-    public MemCachedSearchEmployee(SearchEmployee origin) {
-        this.origin = origin;
-    }
+  public MemCachedSearchEmployee(SearchEmployee origin) {
+    this.origin = origin;
+  }
 
-    @Override
-    public Page<Employee> search(@NonNull EmployeeCriteria criteria, @NonNull Pageable pageable) {
-        if (cache.size() > 10000)
-            cache.keySet().stream().findFirst().ifPresent(x -> cache.remove(x));
-        var key = Pair.of(criteria, pageable);
-        if (!cache.containsKey(key))
-            cache.put(key, origin.search(criteria, pageable));
-        return cache.get(key);
-    }
+  @Override
+  public Page<Employee> search(@NonNull EmployeeCriteria criteria,
+                               @NonNull Pageable pageable) {
+    if (cache.size() > 10000)
+      cache.keySet().stream().findFirst().ifPresent(cache::remove);
+    var key = Pair.of(criteria, pageable);
+    return cache.computeIfAbsent(key, x -> origin.search(criteria, pageable));
+  }
 }