Velocity EU 2013 What is the velocity of an unladen swallow?
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Transcript of Velocity EU 2013 What is the velocity of an unladen swallow?
http://www.flickr.com/photos/damien_m_in_japan/575938779/
http://www.flickr.com/photos/gareth1953/7057132797
http://www.flickr.com/photos/radulovski/7837486702/
http://www.flickr.com/photos/yimhafiz/5119955475/
http://www.flickr.com/photos/evablue/6184132023
http://www.flickr.com/photos/ful1to/3783198574/
http://www.flickr.com/photos/imnohero/2330548144
Photo courtesy of Florian Wieder wiederdesign.com
http://www.flickr.com/photos/24365773@N03/9211817009
http://www.flickr.com/photos/julianlim/4598412264/
http://www.flickr.com/photos/8001265@N08/2259250324
http://www.flickr.com/photos/capttaco/6939970676
http://www.flickr.com/photos/westmidlandspolice/8169072160/
http://www.flickr.com/photos/neospire/3595638270
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DB
Cal
ls P
er
Sess
ion
CP
U P
er
Sess
ion
(se
c)
Database Usage per Web Session
CPUPerSession
DBCallsPerSession
http://www.flickr.com/photos/olly247/2831803988
Queuing
iRule
Data Group
Site | Limit
Main Site
Site Limit Checks
When client
timer reaches
zero
User
All Limit Checks
Does
Site Limit
Exist?
All Sites Limit
Exceeded?
Does
All Sites Limit
Exist?
Site Limit
Exceeded?
Does
Cookie
Exist?
Traffic
counters Increment /
Decrement
No NoYes
Yes Yes YesNo
Yes
No No
Server
controlled timer
served to client
Infr
as
tru
ctu
re A
Infr
as
tru
ctu
re B
Original client request is
passed from queue back
to F5 so customer goes to
the exact page they
originally requested when
queue is inactive
29-Oct-2010
One site didn’t go down….
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Traffic Profile 29th October 2010
1 months revenue in 1 day
10 days revenue per hour for 2 hours
http://www.flickr.com/photos/ful1to/3783198574/
http://www.flickr.com/photos/katescars/5228508617
http://www.flickr.com/photos/imnohero/2330548144
Photo courtesy of Florian Wieder wiederdesign.com
http://www.flickr.com/photos/bensutherland/5920185547
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Traffic Profile 14th November 2010
Spikes within 15 seconds of TV advert start
Traffic boost in ad breaks when we had no active advertisement
http://www.flickr.com/photos/75001512@N00/3938175748
http://www.flickr.com/photos/epsos/4929687589
complacency
Com·pla·cen·cy[kuhm-pley-suhn-see]
a feeling of quiet pleasure or security, often while unaware of some potential danger, defect, or the like;
http://www.flickr.com/photos/pointshoot/861934878
http://www.flickr.com/photos/zeevveez/7095563439
http://www.flickr.com/photos/tico24/57164061
http://www.flickr.com/photos/bluefountainmedia/8191245592
2013 : Analytics Refocused
http://www.flickr.com/photos/sebilden/8472188590
http://www.meetup.com/London-Web-Performance-Group/events/100061982/ http://www.webwob.com/html/webpagetest.html
http://www.flickr.com/photos/dan_culleton/4908793028
WebPageTest Private Instance • https://sites.google.com/a/webpagetest.org/docs/private-instances • http://andydavies.me/blog/2012/09/18/how-to-create-an-all-in-one-webpagetest-private-instance/ HTTPArchive Private Instance • We will publish the HTTPArchive customization we have developed – watch this space! WebPageTest / Jenkins mash-up • http://www.webwob.com/html/webpagetest.html Events • http://velocityconf.com/velocityeu2013/public/schedule/detail/32943 • http://www.webperfdays.org/events/2013-london/index.html • http://www.meetup.com/London-Web-Performance-Group/
http://www.flickr.com/photos/slgc/5970360335
http://www.seatwave.com/movember
http://www.flickr.com/photos/damien_m_in_japan/575938779/