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Luca's blog on data engineering, data platforms, and performance.
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Blog of the database services at CERN
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Wednesday, September 27, 2023
Enhancing Apache Spark Performance with Flame Graphs: A Practical Example Using Grafana Pyroscope
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TL;DR Explore a step-by-step example of troubleshooting Apache Spark job performance using flame graph visualization and profiling. Discove...
Friday, August 11, 2023
Performance Comparison of 5 JDKs on Apache Spark
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Dive into a comprehensive load-testing exploration using Apache Spark with CPU-intensive workloads. This blog provides a comparative analysi...
Thursday, June 22, 2023
Building a Semantic Search Engine and RAG Applications with Vector Databases and Large Language Models
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This blog post is about building a getting-started example for semantic search using vector databases and large language models (LLMs), an e...
Thursday, June 1, 2023
Exploratory Notebooks for Deep Learning, AI, and Data Tools: A Beginner's Guide
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Are you looking at some resources to get you up to speed with popular Deep Learning and Data processing frameworks? This blog entry provides...
Thursday, May 4, 2023
CPU Load Testing Exercises: Tools and Analysis for Oracle Database Servers
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This document describes some basic CPU load testing exercises on three different types of database servers used by the Oracle Service at CER...
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