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Sergei

Sergei

Face to face with zombie process

Trying to involve multiprocessing in our ML services I faced with an issue: processes, except main one, were in zombie state (defunct…

Dec 29, 2023

Face to face with zombie process

Dec 29, 2023

Sergei

Stuck threads management

I already talked how we profiled stuck application in production mode. Despite of it was successfully resolved, it required a time, during…

Dec 29, 2023

Stuck threads management

Dec 29, 2023

Sergei

Profiling python code in production

When developer start to talk about code profiling, in most cases it looks like something extraordinary, required special skills and deep…

Dec 29, 2023

Profiling python code in production

Dec 29, 2023

Sergei
in
Pipedrive R&D Blog

Markovian Recommendations | Markov Chains

Next best action recommendations based on the Naive Bayes behavioral model and (non-)Markovian process

Nov 14, 2023

Markovian Recommendations | Markov Chains

Nov 14, 2023

Sergei
in
Pipedrive R&D Blog

Naive Bayes Classifier Amplification

What profit could be retrieved from this simple ML algorithm

Oct 3, 2023

Naive Bayes Classifier Amplification

Oct 3, 2023

Sergei

Would you like to rehire js modules in unit-tests?

Sometimes, to get away from the routine of work, you want to code a pet project, right? 🙃 Here I’ll talk about such my project — rehirejs…

Oct 1, 2020

Would you like to rehire js modules in unit-tests?

Oct 1, 2020

Sergei
in
Pipedrive R&D Blog

Socket Timeout — An Important and Sometimes Complicated Issue with Python

During my experience working with Python, I’ve had several cases where a network client was left hanging while trying to request a server.

Sep 3, 2020

Socket Timeout — An Important and Sometimes Complicated Issue with Python

Sep 3, 2020

Sergei
in
Pipedrive R&D Blog

Encountering Some Python Trickery

After using Python for years, I began to form a more critical opinion around its ‘multiprocessing’ when I had found a particularly…

Apr 29, 2020

Encountering Some Python Trickery

Apr 29, 2020

Sergei
in
Pipedrive R&D Blog

Weak Reference and Object Management within Python Threads

Working on high availability of our AI services we use multiple processes and threads, which live, die and revive again. If a process is…

Dec 23, 2019

Weak Reference and Object Management within Python Threads

Dec 23, 2019

Sergei

Python, kubernetes & CPU pinning

Solving issue with performance of an AI project in k8s cluster, I faced with interesting workaround for Python & k8s/docker architecture…

Sep 27, 2019

Sep 27, 2019

Sergei

Sergei

Software Engineer. Senior Backend Developer at Pipedrive. PhD in Engineering. My interests are IT, High-Tech, coding, debugging, sport, active lifestyle.

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