Sergio Tulentsev
Mentor
(33 reviews)
US$20.00
For every 15 mins
53
Sessions/Jobs
ABOUT ME
Ruby/Rails developer.
Ruby/Rails developer.
Successfully used rails / mongodb to launch apps which sustained high traffic (> 100M hits/day)
Top-10 stackoverflow user for #ruby and #mongodb
Russian, English
Dublin (+01:00)
Joined September 2013
EXPERTISE
10 years experience | 8 endorsements
Unfortunately, most/all of the sites I participated in are publicly unavailable (internal/closed/stealth)
I have used rails to build a...
Unfortunately, most/all of the sites I participated in are publicly unavailable (internal/closed/stealth)
I have used rails to build a backend for a social game, which served ~3M hits for ~600k DAU.
Also built a statistics/analytics system with JSON API (>100M hits/day).
Top-20 user on stackoverflow: http://stackoverflow.com/tags/ruby-on-rails/topusers
10 years experience | 3 endorsements
I'm one of the top users on stackoverflow :)
http://stackoverflow.com/tags/ruby/topusers
I'm one of the top users on stackoverflow :)
http://stackoverflow.com/tags/ruby/topusers
8 years experience
I have used MongoDB extensively in my own projects, some with high traffic (~650k DAU).
Patched it a couple of times for my own needs....
I have used MongoDB extensively in my own projects, some with high traffic (~650k DAU).
Patched it a couple of times for my own needs.
Top-10 user on stackoverflow: http://stackoverflow.com/tags/mongodb/topusers
1 year experience
REVIEWS FROM CLIENTS
(33 reviews)
ronval
December 2020
He is too fast at solving bugs :)
Very good
Viktors
August 2020
Great! Thank you!
Removed User
July 2019
Extremely kind and helpful!
Removed User
March 2019
Awesome support.
Removed User
March 2019
Thanks :)
successsalon successsalon
March 2019
so much to learn from this guy!! Great mentor.
successsalon successsalon
March 2019
Definitely a lot to learn from this guy. He has great communication and patience as well. Highly recommend!
KathChalmers
March 2019
Great job on a difficult deployment!
Brian Casel
March 2019
Excellent! Fast response, resolved quickly, and did a great job of explaining what was happening. Will work with Sergio again!
Patrick Campbell
February 2016
Sergio is always knowledgeable and helpful!
SOCIAL PRESENCE
200319 Reputation
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How to run a method before every action in Rails?
Traditionally this is done via a before_action filter. Something along these lines:
class ApplicationController
before_action...
Shorter way to define classes with a bunch of properties
If these objects are just bags of properties, then there's a shortcut called Struct.
class Person < Struct.new(:name, :last_name)
end
# or...
How to use conditional logic in string replace operations
You can use block version of gsub. It will pass each match to the block, from which you must return the replacement value.
Silly example:
replaced =...