How We Tamed Database Lock Contention in High‑Volume Inventory Allocation

This article examines the severe row‑lock competition in MySQL during hot‑SKU inventory positioning, analyzes its causes and risks, and presents a comprehensive set of mitigation strategies—including DB account isolation, flow‑control, request merging, and message‑queue optimizations—validated by extensive performance testing and successful rollout across multiple clusters.

Message QueuePerformance Testingbackend optimization

0 likes · 14 min read

How We Tamed Database Lock Contention in High‑Volume Inventory Allocation

Alimama Tech

Aug 30, 2024 · Operations

How a Bi‑Objective Local Search Improves Contract Ad Inventory Allocation

This article presents a bi‑objective inventory allocation model for guaranteed‑delivery advertising that simultaneously maximizes impressions for new orders and balances supply distribution, and introduces a fast alternating local‑search algorithm (BOLS) that outperforms popular multi‑objective evolutionary algorithms and the commercial solver Gurobi in extensive experiments.

Ad TechOperations Researchbi-objective optimization

0 likes · 21 min read

How a Bi‑Objective Local Search Improves Contract Ad Inventory Allocation

Alimama Tech

Jul 11, 2024 · Artificial Intelligence

Efficient Local Search for Guaranteed Display Advertising Inventory Allocation with Multilinear Constraints

The paper introduces LS‑IMP, a two‑stage local‑search algorithm with four novel operators that efficiently solves guaranteed‑delivery advertising inventory allocation under non‑convex multilinear media‑preference constraints, consistently outperforming commercial solvers and heuristics in solution quality and speed on real‑world datasets.

algorithminventory allocationlocal search

0 likes · 17 min read

Efficient Local Search for Guaranteed Display Advertising Inventory Allocation with Multilinear Constraints

iQIYI Technical Product Team

Nov 2, 2018 · Artificial Intelligence

Intelligent Advertising Algorithm System at iQIYI: Architecture, Smart Bidding, Inventory Allocation, and TrueView

iQIYI’s intelligent advertising algorithm system unifies smart bidding, inventory allocation, and TrueView modules—leveraging KNN, XGBoost, ARIMA, LSTM, and Wide&Deep models—to dynamically price ads, forecast and allocate inventory, and predict user‑viewed video ads, thereby enhancing advertiser efficiency, platform revenue, and user experience.

AIAdvertisingTrueView

0 likes · 6 min read

Intelligent Advertising Algorithm System at iQIYI: Architecture, Smart Bidding, Inventory Allocation, and TrueView