April 2015 Blog Posts (2)

JavaOne

Folks,



Perhaps this is old news for you, but JavaOne San Francisco registration is live. Various saving options are available leading up to the conference, and to take advantage of the current US$600 in savings registration needs to be completed by May 31st, 2015 (11:59pm PT).



I encourage you to read through the registration options by visiting the JavaOne registration site:…

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Added by Michael Levin on April 24, 2015 at 11:00am — No Comments

An Inside Look at the Components of a Recommendation Engine

Recommendation engines help narrow your choices to those that best meet your particular needs.  In this post, we’re going to take a closer look at how all the different components of a recommendation engine work together. We’re going to use collaborative filtering on movie ratings data to recommend movies. The key components are a collaborative filtering algorithm in Apache Mahout to build and train a machine learning model,…

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Added by Carol McDonald on April 13, 2015 at 9:14am — 1 Comment

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Notes

Welcome to Codetown!

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When you create a profile for yourself you get a personal page automatically. That's where you can be creative and do your own thing. People who want to get to know you will click on your name or picture and…
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InfoQ Reading List

OpenAI Scales Single Primary Postgresql to Millions of Queries per Second for ChatGPT

OpenAI described how it scaled PostgreSQL to support ChatGPT and its API platform, handling millions of queries per second for hundreds of millions of users. By running a single-primary PostgreSQL deployment on Azure with nearly 50 read replicas, optimizing query patterns, and offloading write-heavy workloads to sharded systems, OpenAI maintained low-latency reads while managing write pressure.

By Leela Kumili

Creating Impactful Teams through Diversity Using Session 0

Diverse and empowered teams are impactful teams, Natan Žabkar Nordberg mentioned in his talk on creating impactful software teams at QCon London. A session 0 helps set expectations and ensures that everyone is approaching the team in a compatible way.

By Ben Linders

WhatsApp Deploys Rust-Based Media Parser to Block Malware on 3 Billion Devices

WhatsApp has rewritten its media handling library in Rust, replacing 160,000 lines of C++ with 90,000 lines of memory-safe code for 3 billion devices. The rollout, part of a system called Kaleidoscope, uses differential fuzzing to ensure bug-for-bug compatibility. The move mirrors a decade-long industry shift toward memory safety, tracing back to Mozilla's first Rust MP4 parser deployment in 2016.

By Steef-Jan Wiggers

Article: You’ve Generated Your MVP Using AI. What Does That Mean for Your Software Architecture?

AI‑generated code creates implicit architectural decisions, forcing teams to rely on experimentation to validate quality attributes. To get useful results from AI, teams must clearly express trade‑offs and reasoning so the model can generate solutions aligned with desired QARs.

By Pierre Pureur, Kurt Bittner

Presentation: Scaling to 100+ as a Director: Lessons From Growing Engineering Organizations

Thiago Ghisi explains the structural shifts required as an engineering org scales from 30 to 100+ engineers. He shares how to transition from managing performance to building opinionated leadership teams and shaping long-term culture. He discusses his "Three Levels of Impact" framework - Org, Skip-Level, and Company - to help leaders drive strategy and secure high-level promotions.

By Thiago Ghisi

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