![Minimize data … examine data controller gets
public class invoiceController {
Invoice__c[] invoices;
String query = 'SELECT Id, Name, Status__c, Invoice_Total__c, CreatedDate,
LastModifiedDate, LastModifiedById, OwnerId FROM Invoice__c ORDER BY Status__c ASC’
LIMIT 1000;
public Invoice__c[] getInvoices() {
invoices = Database.query(query);
return invoices;
}
public PageReference pollAction() {
invoices = Database.query(query);
return null;
}
}](https://image.slidesharecdn.com/df13buildingefficientvisualforcepagesv1-140410172951-phpapp02/85/Building-Efficient-Visualforce-Pages-29-320.jpg)
![Minimize data … match page and controller data
public class invoiceController {
Invoice__c[] invoices;
String query = 'SELECT Id, Name, Status__c FROM Invoice__c ORDER BY Status__c ASC LIMIT 1000';
public Invoice__c[] getInvoices() {
invoices = Database.query(query);
return invoices;
}
public PageReference pollAction() {
invoices = Database.query(query);
return null;
}
}](https://image.slidesharecdn.com/df13buildingefficientvisualforcepagesv1-140410172951-phpapp02/85/Building-Efficient-Visualforce-Pages-30-320.jpg)
![Minimize data … only get the rows that page needs
public class invoiceController {
Invoice__c[] invoices;
String query = 'SELECT Id, Name, Status__c FROM Invoice__c
WHERE Status__c != 'Closed'
LIMIT 1000';
public Invoice__c[] getInvoices() {
invoices = Database.query(query);
return invoices;
}
public PageReference pollAction() {
invoices = Database.query(query);
return null;
}
}](https://image.slidesharecdn.com/df13buildingefficientvisualforcepagesv1-140410172951-phpapp02/85/Building-Efficient-Visualforce-Pages-31-320.jpg)
![Use transient controller variables for read-only data
public class invoiceController {
Invoice__c[] invoices;
String query = 'SELECT Id, Name, Status__c FROM Invoice__c
WHERE Status__c != 'Closed'
LIMIT 1000';
public Invoice__c[] getInvoices() {
invoices = Database.query(query);
return invoices;
}
public PageReference pollAction() {
invoices = Database.query(query);
return null;
}
}](https://image.slidesharecdn.com/df13buildingefficientvisualforcepagesv1-140410172951-phpapp02/85/Building-Efficient-Visualforce-Pages-34-320.jpg)
![Use transient controller variables for read-only data
public class invoiceController {
Transient Invoice__c[] invoices;
String query = 'SELECT Id, Name, Status__c FROM Invoice__c
WHERE Status__c != 'Closed'
LIMIT 1000';
public Invoice__c[] getInvoices() {
invoices = Database.query(query);
return invoices;
}
public PageReference pollAction() {
invoices = Database.query(query);
return null;
}
}](https://image.slidesharecdn.com/df13buildingefficientvisualforcepagesv1-140410172951-phpapp02/85/Building-Efficient-Visualforce-Pages-35-320.jpg)
![Minimize record width
public class invoiceController {
Transient Invoice__c[] invoices;
String query = 'SELECT Id, Name, Status__c, Invoice_Total__c, CreatedDate,
LastModifiedDate, LastModifiedById, OwnerId FROM Invoice__c ORDER BY Status__c ASC
LIMIT 1000';
public Invoice__c[] getInvoices() {
invoices = Database.query(query);
return invoices;
}
public PageReference pollAction() {
invoices = Database.query(query);
return null;
}
}](https://image.slidesharecdn.com/df13buildingefficientvisualforcepagesv1-140410172951-phpapp02/85/Building-Efficient-Visualforce-Pages-43-320.jpg)
![Minimize record count
public class invoiceController {
Transient Invoice__c[] invoices;
String query = 'SELECT Id, Name, Status__c FROM Invoice__c
WHERE Status__c != 'Closed'
LIMIT 1000';
public Invoice__c[] getInvoices() {
invoices = Database.query(query);
return invoices;
}
public PageReference pollAction() {
invoices = Database.query(query);
return null;
}
}](https://image.slidesharecdn.com/df13buildingefficientvisualforcepagesv1-140410172951-phpapp02/85/Building-Efficient-Visualforce-Pages-44-320.jpg)
![Fetch target rows with optimizable filter conditions
public class invoiceController {
Transient Invoice__c[] invoices;
String query = 'SELECT Id, Name, Status__c FROM Invoice__c
WHERE Status__c = ’Open'
LIMIT 1000';
public Invoice__c[] getInvoices() {
invoices = Database.query(query);
return invoices;
}
public PageReference pollAction() {
invoices = Database.query(query);
return null;
}
}](https://image.slidesharecdn.com/df13buildingefficientvisualforcepagesv1-140410172951-phpapp02/85/Building-Efficient-Visualforce-Pages-46-320.jpg)
![Leverage field indexes in filter conditions
public class invoiceController {
Transient Invoice__c[] invoices;
String query = 'SELECT Id, Name, Status__c FROM Invoice__c
WHERE Status__c = ’Open'
LIMIT 1000';
public Invoice__c[] getInvoices() {
invoices = Database.query(query);
return invoices;
}
public PageReference pollAction() {
invoices = Database.query(query);
return null;
}
}](https://image.slidesharecdn.com/df13buildingefficientvisualforcepagesv1-140410172951-phpapp02/85/Building-Efficient-Visualforce-Pages-47-320.jpg)
![Leverage the Salesforce sharing architecture
public with sharing class invoiceController {
Transient Invoice__c[] invoices;
String query = 'SELECT Id, Name, Status__c FROM Invoice__c
WHERE Status__c = ’Open'
LIMIT 1000';
public Invoice__c[] getInvoices() {
invoices = Database.query(query);
return invoices;
}
public PageReference pollAction() {
invoices = Database.query(query);
return null;
}
}](https://image.slidesharecdn.com/df13buildingefficientvisualforcepagesv1-140410172951-phpapp02/85/Building-Efficient-Visualforce-Pages-49-320.jpg)
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Building Efficient Visualforce Pages
- 1. Building Efficient Visualforce Pages Steve Bobrowski, salesforce.com, @sbob909 Markus Spohn, salesforce.com, @markus_spohn Joseph Ferraro, Mavens Consulting, @joeferraro
- 2. Safe harbor Safe harbor statement under the Private Securities Litigation Reform Act of 1995: This presentation may contain forward-looking statements that involve risks, uncertainties, and assumptions. If any such uncertainties materialize or if any of the assumptions proves incorrect, the results of salesforce.com, inc. could differ materially from the results expressed or implied by the forward-looking statements we make. All statements other than statements of historical fact could be deemed forward-looking, including any projections of product or service availability, subscriber growth, earnings, revenues, or other financial items and any statements regarding strategies or plans of management for future operations, statements of belief, any statements concerning new, planned, or upgraded services or technology developments and customer contracts or use of our services. The risks and uncertainties referred to above include – but are not limited to – risks associated with developing and delivering new functionality for our service, new products and services, our new business model, our past operating losses, possible fluctuations in our operating results and rate of growth, interruptions or delays in our Web hosting, breach of our security measures, the outcome of any litigation, risks associated with completed and any possible mergers and acquisitions, the immature market in which we operate, our relatively limited operating history, our ability to expand, retain, and motivate our employees and manage our growth, new releases of our service and successful customer deployment, our limited history reselling non-salesforce.com products, and utilization and selling to larger enterprise customers. Further information on potential factors that could affect the financial results of salesforce.com, inc. is included in our annual report on Form 10-K for the most recent fiscal year and in our quarterly report on Form 10-Q for the most recent fiscal quarter. These documents and others containing important disclosures are available on the SEC Filings section of the Investor Information section of our Web site. Any unreleased services or features referenced in this or other presentations, press releases or public statements are not currently available and may not be delivered on time or at all. Customers who purchase our services should make the purchase decisions based upon features that are currently available. Salesforce.com, inc. assumes no obligation and does not intend to update these forward-looking statements.
- 4. You are a developer or architect maintaining your org …
- 5. Many Visualforce pages are slow & hurting user productivity …
- 6. You need to find and rework slow Visualforce pages.
- 7. Common problems & practical solutions for finding & fixing slow Visualforce pages Today’s Agenda
- 10. What makes for an efficient Visualforce page?
- 11. Two keys to building efficient Visualforce pages … Memory usage Database access Visualforce page
- 12. Happy, productive users …
- 13. Use tools to find and fix inefficient source code …
- 14. Related DevZone hands-on, mini-workshop
- 16. Visualforce page view state How can you ______ it?
- 17. Understand Visualforce page view state
- 18. Visualforce page view state comes from … forms <apex:page showHeader="true" controller="invoiceController" tabstyle="Invoice__c" sidebar="false"> <apex:form > <apex:pageBlock > <h1>Open Invoices</h1> <apex:pageBlockTable id="invoiceList" value="{!invoices}" var="i"> <apex:column headerValue="Name"> <apex:outputLink value="/{!i.Id}">{!i.Name}</apex:outputLink> </apex:column> <apex:column value="{!i.Status__c}"/> </apex:pageBlockTable> </apex:pageBlock> <apex:actionPoller action="{!pollAction}" reRender="invoiceList" interval="15"/> </apex:form> </apex:page> <apex:form>
- 19. Visualforce page view state supports postbacks Browser page with form Server post postback Error Submit
- 20. Visualforce page view state is encrypted …
- 21. Less view state is better for response time …
- 22. Recap: View state …
- 23. Examine Visualforce page view state
- 24. Force.com Development Mode … configuration Advanced user details …
- 25. Force.com development mode … view state
- 26. Live demo page
- 27. Avoid unnecessary Visualforce page view state
- 28. Minimize data … examine data page uses <apex:page showHeader="true" controller="invoiceController" tabstyle="Invoice__c" sidebar="false"> <apex:form > <apex:pageBlock > <h1>Open Invoices</h1> <apex:pageBlockTable id="invoiceList" value="{!invoices}" var="i"> <apex:column headerValue="Name"> <apex:outputLink value="/{!i.Id}">{!i.Name}</apex:outputLink> </apex:column> <apex:column value="{!i.Status__c}"/> </apex:pageBlockTable> </apex:pageBlock> <apex:actionPoller action="{!pollAction}" reRender="invoiceList" interval="15"/> </apex:form> </apex:page>
- 29. Minimize data … examine data controller gets public class invoiceController { Invoice__c[] invoices; String query = 'SELECT Id, Name, Status__c, Invoice_Total__c, CreatedDate, LastModifiedDate, LastModifiedById, OwnerId FROM Invoice__c ORDER BY Status__c ASC’ LIMIT 1000; public Invoice__c[] getInvoices() { invoices = Database.query(query); return invoices; } public PageReference pollAction() { invoices = Database.query(query); return null; } }
- 30. Minimize data … match page and controller data public class invoiceController { Invoice__c[] invoices; String query = 'SELECT Id, Name, Status__c FROM Invoice__c ORDER BY Status__c ASC LIMIT 1000'; public Invoice__c[] getInvoices() { invoices = Database.query(query); return invoices; } public PageReference pollAction() { invoices = Database.query(query); return null; } }
- 31. Minimize data … only get the rows that page needs public class invoiceController { Invoice__c[] invoices; String query = 'SELECT Id, Name, Status__c FROM Invoice__c WHERE Status__c != 'Closed' LIMIT 1000'; public Invoice__c[] getInvoices() { invoices = Database.query(query); return invoices; } public PageReference pollAction() { invoices = Database.query(query); return null; } }
- 32. Live demo page
- 33. Recap: Minimize view state by minimizing data
- 34. Use transient controller variables for read-only data public class invoiceController { Invoice__c[] invoices; String query = 'SELECT Id, Name, Status__c FROM Invoice__c WHERE Status__c != 'Closed' LIMIT 1000'; public Invoice__c[] getInvoices() { invoices = Database.query(query); return invoices; } public PageReference pollAction() { invoices = Database.query(query); return null; } }
- 35. Use transient controller variables for read-only data public class invoiceController { Transient Invoice__c[] invoices; String query = 'SELECT Id, Name, Status__c FROM Invoice__c WHERE Status__c != 'Closed' LIMIT 1000'; public Invoice__c[] getInvoices() { invoices = Database.query(query); return invoices; } public PageReference pollAction() { invoices = Database.query(query); return null; } }
- 36. Live demo page
- 37. Recap: Eliminate read-only data from the view state
- 38. Avoid Visualforce page view state altogether
- 39. Refresh data without actionPoller (and view state) Traditional polling alternatives to actionPoller: Long polling/streaming updates:
- 41. Database-efficient Visualforce controllers Key characteristics: ______ SOQL logic
- 43. Minimize record width public class invoiceController { Transient Invoice__c[] invoices; String query = 'SELECT Id, Name, Status__c, Invoice_Total__c, CreatedDate, LastModifiedDate, LastModifiedById, OwnerId FROM Invoice__c ORDER BY Status__c ASC LIMIT 1000'; public Invoice__c[] getInvoices() { invoices = Database.query(query); return invoices; } public PageReference pollAction() { invoices = Database.query(query); return null; } }
- 44. Minimize record count public class invoiceController { Transient Invoice__c[] invoices; String query = 'SELECT Id, Name, Status__c FROM Invoice__c WHERE Status__c != 'Closed' LIMIT 1000'; public Invoice__c[] getInvoices() { invoices = Database.query(query); return invoices; } public PageReference pollAction() { invoices = Database.query(query); return null; } }
- 45. Force.com Query & Search Optimization Cheat Sheet http://developer.force.com/architect
- 46. Fetch target rows with optimizable filter conditions public class invoiceController { Transient Invoice__c[] invoices; String query = 'SELECT Id, Name, Status__c FROM Invoice__c WHERE Status__c = ’Open' LIMIT 1000'; public Invoice__c[] getInvoices() { invoices = Database.query(query); return invoices; } public PageReference pollAction() { invoices = Database.query(query); return null; } }
- 47. Leverage field indexes in filter conditions public class invoiceController { Transient Invoice__c[] invoices; String query = 'SELECT Id, Name, Status__c FROM Invoice__c WHERE Status__c = ’Open' LIMIT 1000'; public Invoice__c[] getInvoices() { invoices = Database.query(query); return invoices; } public PageReference pollAction() { invoices = Database.query(query); return null; } }
- 48. Live demo page
- 49. Leverage the Salesforce sharing architecture public with sharing class invoiceController { Transient Invoice__c[] invoices; String query = 'SELECT Id, Name, Status__c FROM Invoice__c WHERE Status__c = ’Open' LIMIT 1000'; public Invoice__c[] getInvoices() { invoices = Database.query(query); return invoices; } public PageReference pollAction() { invoices = Database.query(query); return null; } }
- 50. Recap: Execute efficient SOQL queries (And don’t forget to use the sharing architecture)
- 51. Design efficient controller logic
- 52. Use standard set controllers, when possible Use whenever possible: don't reinvent things
- 53. Place DML and SOQL outside of loops
- 54. Use bulk processing best practices
- 55. Make efficient design choices
- 56. openInvoices page, revisited Refreshes … every 15 seconds
- 57. Avoid traditional polling pull (polling) Invoice
- 58. Use long polling with the Force.com Streaming API pull (polling) Invoice Update
- 59. Live demo page
- 60. Recap: Use efficient overall page designs
- 61. Using tools to find and fix common problems … FAST!
- 62. Be aware of available tools
- 65. Third-party Force.com application development tools
- 66. MavensMate
- 67. All about Joe Ferraro and Mavens Consulting Mavens Consulting is the Life Science industry’s premier salesforce.com implementation partner focused exclusively on delivering optimized Force.com solutions. Certified Force.com and Veeva Experts Unparalleled Global Knowledge in Life Sciences Specialists in Service Cloud Implementations for MedInfo Contact Centers and Multi-Channel Portals for Physicians and Reps
- 68. MavensMate
- 69. MavensMate
- 70. Leverage the power of your tools
- 71. MavensMate Project Health Check
- 72. Live demo page
- 73. Recap: Find and fix common problems proactively
- 74. Session summary
- 75. Building Efficient Visualforce Pages
- 76. Related DevZone hands-on, mini-workshop
- 77. Steve Bobrowski Salesforce.com @sbob909 Markus Spohn Salesforce.com @markus_spohn Joseph Ferraro Mavens Consulting @joeferraro
- 79. Slide parts
- 80. Slide parts