Legacy won't be the end of us

LEGACY

Dragos Miron@dragosmiron@capze

LEGACY WON’T BETHE END OF US



LEGACY


LEGACY CAN MAKE USBETTER DEVELOPERS





LEGACYWHAT ISFOR YOU?



RUBY 1.8

RAILS 2


NO!


Legacy


RAILS 3


RAILS 3RUBY 1.9


RAILS 3RUBY 1.9

Long Models

with 10 modules


Your MONGO version


Your MONGO version

MONOLITH App


Your MONGO version

MONOLITH AppBAD SQL QUERIES



A story of


the story at



One day…






A TURN FOR THE GOOD


HARD PROBLEMS


HARD PROBLEMSBETTER

SOFTWARE ENGINEERS


RESOURCEFUL

T E A M


RESOURCEFUL

T E A M


HOW DID WETACKLE the LEGACY

?


OUR PROs


RIPPINGOUR PROs

INTO SERVICESthe APP


QUERY OptimisationOUR PROs


QUERY Optimisationuse specific INDICESget rid of FILESORT

OUR PROs


QUERY Optimisationuse specific INDICESget rid of FILESORT

OUR PROs


DATA TIERINGREPLICATION

OUR PROs


We built OUR OWNOUR PROs

CI cluster


TECH FRIDAYSOUR PROs

We handle more LEGACY


OUR PROs

ruby 1.8 -> ruby 1.9rails 2 -> rails 3


RECAPSOADB Opt.

Tech FridaysOld tech. migration


CULTURET E A M


Pull RequestsFreedom of speech

Collaborative participation


The story at


RUBY might die…


RUBY might die…TRAIN asa softwareCRAFTSMAN


in YOUR FAVOUR

TURN THEWHEEL around


Legacy can make youcontribute to OpenSourcehelp your fellow devs


TAKE A STANDIN YOUR COMPANY


WE dictate the DIRECTION of

the SOFTWARE


TOMORROW

Leave a CLEANER CODEBASE


TOMORROW

START

Refactoring!


Legacy


Great SOFTWARE

thank you!Dragos Miron

@dragosmiron@capze

Legacy won't be the end of us

Technology