Avoid Growing Pains: Scale your App for the Enterprise Randy Case ISV Technical Evangelist @randyscase

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Agenda

–  Introduction – Thinking at enterprise scale – Force.com database architecture and tuning – Architecting your application for scale – Testing your application at scale – Peek into the future – Question and Answers

Understand application and user requirements

Estimate volumes at enterprise scale

Operational vs. Historical Data

Understand where scale will be used

Estimate the growth and volume of data

Can you achieve a steady state on volume?

Where does growth come from?

How fast will data volume increase?

Design your app for scale

Always think big (be reasonable)!

Test, Test, Test, … Understand the impact areas of LDV

Use to introduce a

demo, video, Q&A, etc.

Force.com Database Architecture and Tuning

Force.com Database Architecture

Shared Database

Data and Pivot Tables

Check user Visibility

Check filter selectivity

Write query-based on results

of pre-queries

Execute query

User Visibility

# of rows that the user can access

=

Filter Selectivity

How specific is this filter? =

Stop

Go

Multi-tenant Optimizer Statistics

Multi-tenant Query Optimizer

Use to introduce a

demo, video, Q&A, etc. Architecting Your Application for Scale

What you need to do

The Key to Performance

Selectivity

Data Reduction

§  Reduce the amount of data accessed during query. §  Make query parameters specific as possible.

§  Less data means better performance §  Consider archiving in initial design §  Many features to facilitate archiving process.

Reports

1. Use focused report filters 2. Pre-aggregate the data

3. De-normalize the data 4. Use a data warehouse

API Best Practices

1. No Apex triggers and workflow 2. Operation choice

3. Record sizes 4. Optimize sharing if possible

API Best Practices

1.  Delta-only loads 2. Parent record locking

3. Keep large volumes out of DB

4. Database statistics

Sharing

•  Used by all features and can have huge impact with LDV. •  Data accessibility is governed by:

– Organization-wide defaults – Role hierarchy – Sharing rules – Criteria-based sharing – Manual shares – Programmatic sharing – Implicit sharing

1. Avoid over-protection of data

3. Avoid skew 4. Don’t nest groups too deeply

Sharing Best Practices

2. Leverage the right tools for the Task

SOQL Best Practices §  Make queries selective §  Use alternative approach

§  Utilize Apex to do the work §  Decompose relationship queries

§  Some use cases that will cause issues: §  Performing large data loads and immediate query §  LIKE with leading wildcards “%Acme” §  Use of NOT and “!=“ §  Complex queries with multiple joins §  Data in the Recycle Bin

Query Resource Feedback Parameter Pilot

DB

SEARCH INDEX

DB processing includes sharing access check

Millions of records

Query across entire index for matches to search string

Record IDs of matches to query are sent to DB for processing

1. Keep search text specific 2. Avoid complex sharing

3. Single object searches

Search Best Practices

4. LDV data changes

Use to introduce a

demo, video, Q&A, etc. Architecting Your Application for Scale

How Salesforce may help you

What are Indexes?

ID First Name Last Name 1000001 John Smith

1000002 Jane Jones

1000003 Buzz Baker

ID First Name Last Name 1000003 Buzz Baker

1000002 Jane Jones

1000001 John Smith

Index Rules •  Must be below thresholds to be useful:

– Custom Indexes: Lower of (10% of 1M + 5% over 1M) or 333,333. – Standard Indexes: Lower of (30% of 1M + 15% over 1M) or 1M.

•  Modified by “AND” and “OR” – AND – Below 20% of total records or 666K for custom index – OR – Below 10% of total records or 333K in summation of all indexes.

•  Predicates that won’t use indexes – Not equal to (i.e. “!=“) – NOT(i.e. NOT IN)

Skinny Tables •  Reduced I/O •  Better cache Utilization •  Reduced Joins •  Invisible to End users •  Supported in reports, list views and

SOQL queries •  All fields must be in skinny table

Use to introduce a

demo, video, Q&A, etc. Testing Your Application at Scale

What Is Performance Testing?

Response Time Based Testing Confirm that a set of process flows perform in such a manner as to give the end user a positive experience

User Load Based Testing Confirm that a set of process flows will be able to support a particular user load.

Candidates for Performance Testing •  Areas effected by large data volumes

–  Custom code (VF, Apex) –  Reports, List views –  Page detail with possible skew

•  Usage Patterns –  Large number of records –  Large number of users –  Large number of transactions

What is response time based testing? •  This is functional and execution performance testing at scale.

–  Functional testing •  Ensure all app functionality executes without error •  Ensure UX is optimal at large data volumes

–  Execution performance testing •  Understand relative response times •  Focus on improving relative performance

What is user load based testing?

Simulate Users

Load Generators

Load Controller

Load Metrics

Use to introduce a

demo, video, Q&A, etc. Peek into the Future

•  Efficient storage for non-transactional data •  Unstructured and Semi-structured Blob Store

•  Highly-scalable batch processing Programmatic data lifecycle from live to archive state

Future Enhancements

Big Objects Fileforce API

Data Pipelining

Data Archiving

Dreamforce Sessions •  Introducing Force.com Data Management Services

– Wednesday, 4:00 PM - 4:40 PM – Century Theaters – Theater 5

•  Get Out of Cold Storage, Get into Data Archiving on Salesforce – Wednesday, 11:00 AM - 11:40 AM – Century Theaters – Theater 2

Summary •  Develop your app with scale in mind. •  Use best practices when building.

–  Keep data volumes to a minimum. –  Optimize and tune programmatic components

•  Test for scale before your customer does.

Resources •  Developer Website

•  The ISV team will help you!

+ “Forgot the ring” =

+ “What work?” =

+ “Application Scalability” =

Check out the new Partner Community

https://partners.salesforce.com/

Connect with Partners in the Partner Zone The Westin Hotel, Market Street 2nd Floor – Metropolitan Ballroom INNOVATE with the leading technology •  Demos of new Salesforce technology CONNECT with members of the partner community •  Partner Community Theater •  Networking areas •  Welcome reception and daily lunch service GROW your business with resources •  70+ partner-specific sessions •  ‘Ask the Experts’ consultation stations

AppBash 2014 on Wednesday Night!