Hi all,
I'm using Spring Data Jpa/Hibernate to load a paged list of 20 items from a MySql database with 200.000 records.
I'm experiencing very poor performace, to load a page of 20 record it takes about 4/5 seconds per request.
I've tried to do the same task using .NET/Entity framework against the same database, in this case it takes about 60/70 milliseconds.
There is no comparison between the two solutions.
Am I doing something wrong or is there something wrong in the default implementation of Pagination in Spring Data?
Here my code:
Entities
Repository
MVC Controller
View
Thank you in advance.
Andrea
I'm using Spring Data Jpa/Hibernate to load a paged list of 20 items from a MySql database with 200.000 records.
I'm experiencing very poor performace, to load a page of 20 record it takes about 4/5 seconds per request.
I've tried to do the same task using .NET/Entity framework against the same database, in this case it takes about 60/70 milliseconds.
There is no comparison between the two solutions.
Am I doing something wrong or is there something wrong in the default implementation of Pagination in Spring Data?
Here my code:
Entities
Code:
@Entity
@Table(name = "Account")
public class Account {
@Id
private Long id;
@OneToOne(mappedBy = "account", fetch = FetchType.EAGER, cascade = CascadeType.ALL)
private Customer customer;
@Temporal(TemporalType.DATE)
private Date expiryDate;
public Long getId() {
return id;
}
public Customer getCustomer() {
return customer;
}
public Date getExpiryDate() {
return expiryDate;
}
public void setId(Long id) {
this.id = id;
}
public void setCustomer(Customer customer) {
this.customer = customer;
}
public void setExpiryDate(Date expiryDate) {
this.expiryDate = expiryDate;
}
}
@Entity
@Table(name = "Customer")
public class Customer {
@Id
private Long id;
private String firstname;
private String lastname;
@OneToOne
@PrimaryKeyJoinColumn
Account account;
public Long getId() {
return id;
}
public String getFirstname() {
return firstname;
}
public String getLastname() {
return lastname;
}
public void setId(Long id) {
this.id = id;
}
public void setFirstname(String firstname) {
this.firstname = firstname;
}
public void setLastname(String lastname) {
this.lastname = lastname;
}
}Code:
public interface AccountRepository extends JpaRepository<Account, Long> {
}Code:
@Controller
@RequestMapping("/accounts")
public class AccountController {
@Autowired
private AccountRepository accountRepository;
@Autowired
private CustomerRepository customerRepository;
private final int pageSize = 20;
private static final Logger logger = LoggerFactory
.getLogger(AccountController.class);
@RequestMapping(value = "/list", method = RequestMethod.GET)
public String list(Model model) {
return this.list(0, model);
}
@RequestMapping(value = "/list/{pageNumber}", method = RequestMethod.GET)
public String list(@PathVariable Integer pageNumber, Model model) {
String timingLog = "";
StopWatch stopWatch = new StopWatch();
PageRequest page;
Page<Account> accounts;
stopWatch.start();
page = new PageRequest(pageNumber, pageSize, Direction.ASC,
"customer.lastname", "customer.firstname");
accounts = accountRepository.findAll(page);
model.addAttribute("accounts", accounts);
stopWatch.stop();
timingLog += "Load Accounts: " + stopWatch.getTotalTimeMillis() + "; ";
int current = accounts.getNumber() + 1;
int begin = Math.max(1, current - 5);
int end = Math.min(begin + pageSize, accounts.getTotalPages());
model.addAttribute("beginIndex", begin);
model.addAttribute("endIndex", end);
model.addAttribute("currentIndex", current);
model.addAttribute("timingLog", timingLog);
return "accounts.list";
}
}Code:
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ page session="false"%>
<c:url var="firstUrl" value="/pages/1" />
<c:url var="lastUrl" value="/pages/${accounts.totalPages}" />
<c:url var="prevUrl" value="/pages/${currentIndex - 1}" />
<c:url var="nextUrl" value="/pages/${currentIndex + 1}" />
<html>
<head>
<title>Page</title>
<style type="text/css">
.navlist li {
display: inline;
list-style-type: none;
padding-right: 20px;
}
</style>
</head>
<body>
<h1>List Accounts Using Jpa Repository</h1>
<a href='<c:url value="/accounts"/>'>Accounts Home</a>
<a href='<c:url value="/accounts/add.form"/>'>Add Accounts</a>
<div>
<table width="100%" border="0">
<thead>
<tr>
<td>Counter: ${accounts.getTotalElements()}</td>
<td>Id</td>
<td>Expiration Date</td>
<td>Firstname</td>
<td>Lastname</td>
</TR>
</thead>
<tbody>
<c:forEach items="${accounts.getContent()}" var="item"
varStatus="status">
<tr class="${status.count % 2 == 0 ? 'even' : 'odd'}">
<td>${status.count})</td>
<td>${item.id}</td>
<td>${item.expiryDate}</td>
<td>${item.customer.firstname}</td>
<td>${item.customer.lastname}</td>
<td></td>
</tr>
</c:forEach>
</tbody>
</table>
</div>
<div>
<ul class="navlist">
<c:choose>
<c:when test="${currentIndex == 1}">
<li class="disabled"><a href="#"><<</a></li>
<li class="disabled"><a href="#"><</a></li>
</c:when>
<c:otherwise>
<li><a href="${firstUrl}"><<</a></li>
<li><a href="${prevUrl}"><</a></li>
</c:otherwise>
</c:choose>
<c:forEach var="i" begin="${beginIndex}" end="${endIndex}">
<c:url var="pageUrl" value="/accounts/list/${i}" />
<c:choose>
<c:when test="${i == currentIndex}">
<li class="active"><a href="${pageUrl}"><c:out
value="${i}" /></a></li>
</c:when>
<c:otherwise>
<li><a href="${pageUrl}"><c:out value="${i}" /></a></li>
</c:otherwise>
</c:choose>
</c:forEach>
<c:choose>
<c:when test="${currentIndex == accounts.totalPages}">
<li class="disabled"><a href="#">></a></li>
<li class="disabled"><a href="#">>></a></li>
</c:when>
<c:otherwise>
<li><a href="${nextUrl}">></a></li>
<li><a href="${lastUrl}">>></a></li>
</c:otherwise>
</c:choose>
</ul>
</div>
${timingLog}
</body>
</html>Thank you in advance.
Andrea