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58 Tech
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58 Tech

Official tech channel of 58, a platform for tech innovation, sharing, and communication.

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Recent Articles

Latest from 58 Tech

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58 Tech
58 Tech
Dec 16, 2021 · Artificial Intelligence

Commercial Recommendation System for 58 Recruitment: Architecture, Recall, and Ranking Techniques

This talk presents the design and implementation of 58's commercial recruitment recommendation system, covering the business scenario, system architecture, regional and behavior‑based recall methods, various ranking models—including coarse‑ranking, dual‑tower, DIN‑bias, and multitask W3DA—and future optimization directions.

DBSCANEGESRanking
0 likes · 20 min read
Commercial Recommendation System for 58 Recruitment: Architecture, Recall, and Ranking Techniques
58 Tech
58 Tech
Dec 14, 2021 · Artificial Intelligence

Unsupervised Community Detection for Black‑Market Identification Using the Louvain Algorithm

This article presents an unsupervised community‑discovery approach based on the Louvain algorithm to identify black‑market accounts, describing the threat landscape, system architecture, algorithmic principles, optimizations, experimental results, and future directions for improving risk detection in large‑scale online services.

Louvain Algorithmblack marketcommunity-detection
0 likes · 10 min read
Unsupervised Community Detection for Black‑Market Identification Using the Louvain Algorithm
58 Tech
58 Tech
Nov 30, 2021 · Backend Development

Building a Platformized BFF Layer with GraphQL, JSON Templates, and Service Governance

The article explains how a Backend‑For‑Frontend (BFF) layer can be constructed using GraphQL for on‑demand data fetching, JSON template engines for data transformation, and routing capabilities for version handling, resulting in a scalable, maintainable architecture that integrates with low‑code front‑end platforms.

BFFGraphQLJSON Template
0 likes · 17 min read
Building a Platformized BFF Layer with GraphQL, JSON Templates, and Service Governance
58 Tech
58 Tech
Nov 25, 2021 · Artificial Intelligence

Technical Evolution of the “Guess You Want” Recommendation Module in 58 Local Services

This article describes the design, multi‑stage recall strategies, and successive ranking model upgrades—including BERT‑based intent prediction, vector‑based DSSM recall, tag expansion, and multi‑task DeepFM/MMoE/ESMM architectures—that together reduce no‑result rates and significantly improve user conversion for 58's local service platform.

BERTDSSMMulti-Task Learning
0 likes · 16 min read
Technical Evolution of the “Guess You Want” Recommendation Module in 58 Local Services
58 Tech
58 Tech
Nov 18, 2021 · Artificial Intelligence

Intelligent Search Strategy for 58 Recruitment: Breaking Category Constraints and Building a Smart Recall Framework

This article describes how 58 recruitment revamped its search system by removing rigid category limits, introducing query rewriting, intent recognition, doc understanding, and vector‑based recall, resulting in significantly higher relevance, reduced bad cases, and improved commercial performance.

AIIntent RecognitionQuery Rewriting
0 likes · 14 min read
Intelligent Search Strategy for 58 Recruitment: Breaking Category Constraints and Building a Smart Recall Framework
58 Tech
58 Tech
Nov 16, 2021 · Artificial Intelligence

Deep Optimization of the 58 Yellow Pages Smart Chat Assistant for Enhanced User Experience and Business Opportunity Conversion

This article details the development and continuous optimization of 58.com’s Yellow Pages smart chat assistant, covering background, metrics, model improvements for QABot and TaskBot, slot extraction, quality assessment, and future directions, resulting in near‑human conversion rates and significant operational savings.

AIBusiness OpportunityChatbot
0 likes · 22 min read
Deep Optimization of the 58 Yellow Pages Smart Chat Assistant for Enhanced User Experience and Business Opportunity Conversion
58 Tech
58 Tech
Nov 11, 2021 · Frontend Development

Cross‑Platform Mini Program Log Collection SDK: Design, Implementation, and Practice

This article introduces a lightweight, cross‑platform SDK for mini‑programs that unifies log collection—including exception, normal, and performance data—by intercepting App, Page and platform‑specific APIs, handling multi‑environment differences, and providing flexible usage via npm or single‑file integration.

Performance MonitoringSDKcross‑platform
0 likes · 15 min read
Cross‑Platform Mini Program Log Collection SDK: Design, Implementation, and Practice
58 Tech
58 Tech
Nov 9, 2021 · Frontend Development

Guide to Using @umajs/plugin-vue-ssr for Vue Server-Side Rendering with UMajs

This article introduces the @umajs/plugin-vue-ssr plugin, detailing its installation, configuration, key features, data fetching methods, CSS support, and integration with Vue, Vuex, and Koa to enable efficient server‑side rendering and client‑side rendering within the UMajs framework.

Node.jsSSRUMajs
0 likes · 9 min read
Guide to Using @umajs/plugin-vue-ssr for Vue Server-Side Rendering with UMajs