Cache Replacement Policies: How LRU, LFU, FIFO, MRU, and Pseudo-LRU Work in Real Systems
Beyond textbook theory: Discover how cache replacement policies like LRU, LFU, and PLRU operate across CPU caches, Linux kernel reclaim, and databases.
A Gadallh
Ahmed Gadallah is the Founder and Editor of Vertex Frontier, where he publishes research-driven articles on AI, data science, cloud computing, cybersecurity, software engineering, and emerging technologies, with a focus on technical accuracy, clarity, and practical insights.
Ollama vs vLLM vs LM Studio: Serving Local LLMs Beyond the Demo
Ollama vs vLLM vs LM Studio: See why architecture decides cold starts, concurrency, tool calling and cost, and when to migrate. Sourced 2026 benchmarks.
SARIMA Model Explained: Seasonal Time Series Forecasting in Python
Learn how SARIMA works, choose seasonal parameters, validate forecasts, and build a reproducible Python model with statsmodels.
Polars vs Pandas on 10GB: The 2026 Benchmarks, Memory Limits, and the DuckDB Factor
Polars vs pandas on 10GB in 2026: verified benchmarks, why multipliers range from 3x to 94x, where DuckDB fits, memory limits, and who should stay on pandas.
ARIMAX Dynamic Regression: Integrate Explanatory Variables the Right Way
Learn ARIMAX dynamic regression in Python and R: choose exogenous variables, supply future X, identify lags, check residuals, and avoid forecast leakage.
Mastering ARIMA: The Complete Guide to Time Series Forecasting
Learn ARIMA the practical way: a readiness test, working Python code, rolling validation, and a real airline-data experiment showing where models fail.
Multitenant Vector DB Isolation: Detecting Index Drift and Cross-Tenant Leaks in Production
A production guide to detecting index drift and cross-tenant leaks in multitenant vector databases, with real failure cases from Milvus, Pinecone and pgvector.
Data Warehouse Interview Questions: 40+ Questions and Answers
Prepare for data warehouse interviews with 40+ practical questions on SQL, dimensional modeling, ETL, cloud warehouses, performance, quality, and design.
How to Avoid Nested Loops in Python: Fix the Design, Not the Loop
Nested loops are rarely the real problem. Learn 3 design questions that expose what your Python loops are hiding, with before/after code and Big O advice.
Scalable Python Project Structure: A Production Blueprint for FastAPI
Build a scalable Python project structure for FastAPI: thin routers, services, Pydantic Settings, uv, Docker, and pytest overrides with real case studies.
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