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Building Resilient Frontend Systems - NationJS
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Ianfeather
December 02, 2017
Technology
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Building Resilient Frontend Systems - NationJS
Ianfeather
December 02, 2017
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Transcript
BUILDING RESILIENT FRONTEND SYSTEMS Ian Feather - BuzzFeed
None
RESILIENCE IS FUNCTION IN A HOSTILE ENVIRONMENT
HOW CAN OUR SYSTEMS FAIL? SECTION 1
3RD PARTY AVAILABILITY
None
S3
S3 DYN DNS
S3 DYN DNS CDN
S3 DYN DNS CDN S3
3RD PARTY AVAILABILITY
3RD PARTY AVAILABILITY OUR OWN BUGS
None
3RD PARTY AVAILABILITY OUR OWN BUGS
3RD PARTY AVAILABILITY OUR OWN BUGS THE NETWORK
None
1.04% OF REQUESTS FOR JAVASCRIPT WILL TIMEOUT
13 MILLION PAGEVIEWS PER MONTH
3RD PARTY AVAILABILITY OUR OWN BUGS THE NETWORK
3RD PARTY AVAILABILITY OUR OWN BUGS THE NETWORK USERS’ PRIVILEGE
8.9% OF USERS USE SOME FORM OF CONTENT BLOCKER
3.84% WON’T SUCCESSFULLY DOWNLOAD OUR FONTS
38 MILLION PAGEVIEWS PER MONTH
3RD PARTY AVAILABILITY OUR OWN BUGS THE NETWORK USERS’ PRIVILEGE
HOPE FOR THE BEST
DESIGN FOR FAILURE
DESIGN FOR FAILURE SECTION 2
PRIORITIZE CRITICAL PARTS OF THE PAGE
User
User html
User html CSS JS IMAGES
User html IMAGES CSS JS IMAGES
User FONTS html IMAGES CSS JS IMAGES
User FONTS html IMAGES DATA (xhr) CSS JS IMAGES
User FONTS html IMAGES DATA (xhr) IMAGES CSS JS IMAGES
User FONTS html IMAGES DATA (xhr) IMAGES CSS JS IMAGES
Images
User FONTS html IMAGES DATA (xhr) IMAGES CSS JS IMAGES
HTML
None
None
None
PRIORITIZE CRITICAL PARTS OF THE PAGE
PRIORITIZE CRITICAL PARTS OF THE PAGE MAKE ERRORS A FIRST
CLASS CITIZEN
SOMETHING BROKE. SHOULD I TELL THEM?
None
✘
✘
None
None
PRIORITIZE CRITICAL PARTS OF THE PAGE MAKE ERRORS A FIRST
CLASS CITIZEN
PRIORITIZE CRITICAL PARTS OF THE PAGE MAKE ERRORS A FIRST
CLASS CITIZEN REPORT YOUR ERRORS
KNOWING IT’S BROKEN BEFORE TWITTER DOES
None
PRIORITIZE CRITICAL PARTS OF THE PAGE MAKE ERRORS A FIRST
CLASS CITIZEN REPORT YOUR ERRORS
MITIGATE RISK SECTION 3
BUILD IN REDUNDANCY
Asset SERVER 1
Asset SERVER 1 www.asset-server-one.com/styles.css
Asset SERVER 1 www.asset-server-one.com/styles.css
✖ Asset SERVER 1 www.asset-server-one.com/styles.css
✖ Asset SERVER 1 Asset SERVER 2 www.asset-server-one.com/styles.css
✖ Asset SERVER 1 Asset SERVER 2 www.asset-server-two.com/styles.css www.asset-server-one.com/styles.css
✖ Asset SERVER 1 Asset SERVER 2 www.asset-server-two.com/styles.css www.asset-server-one.com/styles.css
Asset SERVER 1 Asset SERVER 2 Proxy service
Asset SERVER 1 Asset SERVER 2 www.asset-server.com/styles.css Proxy service
Asset SERVER 1 Asset SERVER 2 www.asset-server.com/styles.css Proxy service
Asset SERVER 1 Asset SERVER 2 www.asset-server.com/styles.css Proxy service
CLOUD PROVIDER CDN STATIC ASSET SERVER FONT PROVIDER IMAGE SERVICE
ADS PROVIDER AB TEST SERVICE
BUILD IN REDUNDANCY
BUILD IN REDUNDANCY SERVE STALE CONTENT
SERVER
SERVER CDN
SERVER CDN
SERVER CDN
SERVER CDN
SERVER CDN
SERVER CDN
CDN SERVER
CDN ✖ SERVER
CDN ✖ SERVICE WORKER SERVER
CDN ✖ SERVICE WORKER SERVER
BUILD IN REDUNDANCY SERVE STALE CONTENT
IN SUMMARY
IN SUMMARY
THANKS
INCREDIBLE PHOTOGRAPY VIA UNSPLASH NeONBRAND - https://unsplash.com/photos/plrlb68XPqI Marc Liu -
https://unsplash.com/photos/Z8epsqHdYeM Amy Reed - https://unsplash.com/photos/49ZXvCLerUo Matt Le - https://unsplash.com/photos/SJSpo9hQf7s White wolf wizard - https://unsplash.com/photos/cttQw_azA40