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Intelligence in software development
Audrius Bugas
Previous Talks 2017
Feature Toggle: HomeToGo
Use Case @ KaunasPHP,
VilniusPHP
https://youtu.be/bGy4aa-OqHg
Application Autoscaling on
AWS: HomeToGo case @
KaunasPHP, VilniusPHP
https://youtu.be/ET3CTaZuabM
Most Important Skills for a Software Developer?
Skill 1: Solving
Problems
Without problems there wouldn’t be a
need for software.
Skill 2: Teaching
Yourself
You can’t know everything about everything.
Instead you need the ability to quickly
acquire the knowledge you need for the
task at hand.
Skill 3: Naming
Skill 4: Dealing with People
Operations & Analytics
Taking big part of dev work
Solving problems
Dealing with people
Teaching yourself
Naming
2
3
1
Log Analysis User Action
Tracking
Automated alerts
4
A/B testing
Logs: must have
Access Logs Error Log Sessions
Field Type Enrichment
timestamp datetime -
request string -
ip string -
referer string -
agent string -
code int -
method string -
vhost string -
asn string +
owner string +
route string +
CSV Data
Kaune (Liepos 11 d. 17:00 val.) ,Audrius Bugas,Hometogo
while read f1
do
curl -XPOST 'http://127.0.0.1:9200/list/type1/?
pipeline=parse_csv' -H "Content-Type: application/json” -d
"{ "line": "$f1" }"
done < nfqtalks.csv
2
3
1
Log Analysis User Action
Tracking
Automated alerts
4
A/B testing
window.performance.timing
Questions to answer
Do I need CDN? Which CDN is
better?
What is CVR for
users where page
load is 500ms below
average?
?
I got an error on
older Firefox
version. Do I need
to fix it now?
2
3
1
Log Analysis User Action
Tracking
Automated alerts
4
A/B testing
No need to track gazillion metrics
every day, every deployment
Not all values are able to recover in time.
Value is tracked once you have an alert for it
Fast reaction and recovery.
Wide variety of problems
Incident prevention
Metric
History
Time
Saver
Automated Alerts
2
3
1
Log Analysis User Action
Tracking
Automated alerts
4
A/B testing
Experiments
Understanding influence of new feature
Iterating over versions
Optimising website parameters
Testing major refactoring
Canary releases
Thank You
https://www.slideshare.net/AudriusBugas/intelligence-in-software-development
Questions?
Feedback
https://goo.gl/Vt6Ts3

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Intelligence in software development