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Official Hello technology account, sharing tech insights and developments.

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HelloTech

Feb 28, 2023 · Frontend Development

Design and Implementation of a Taro Component Library with Integrated Documentation and Demo

The article describes building a Taro component library whose components, documentation and live demos are generated from a single Markdown source, using Rollup‑built ES modules, a Vite‑based static site, a custom webpack markdown loader, and an isolated H5 demo project to ensure maintainable, reusable code and synchronized documentation.

Component LibraryFront-end DevelopmentRollup

0 likes · 10 min read

Design and Implementation of a Taro Component Library with Integrated Documentation and Demo

HelloTech

Feb 13, 2023 · Mobile Development

Hybrid Native Map and H5 Integration via WebView for Overseas Projects

The project replaces costly Google Dynamic Maps with a hybrid solution that overlays a transparent WebView on a native map component, using a JSBridge to route H5 events and native map interactions, dynamically managing hot‑zone data, thereby cutting service fees, boosting performance, and preserving H5 development flexibility.

HotzoneHybrid AppJSBridge

0 likes · 10 min read

Hybrid Native Map and H5 Integration via WebView for Overseas Projects

HelloTech

Feb 7, 2023 · R&D Management

How to Empower Developers for Self‑Testing: A Four‑Step Framework

This article outlines a practical four‑step framework—defining standards, providing enablement, ensuring controllability, and fostering a collaborative atmosphere—to help testing teams support developers in conducting reliable self‑tests before production deployment.

R&D collaborationdevelopment processquality assurance

0 likes · 8 min read

How to Empower Developers for Self‑Testing: A Four‑Step Framework

HelloTech

Jan 31, 2023 · Operations

Stability Assurance Practices for Large‑Scale Promotional Events

The article outlines a comprehensive stability‑assurance framework for large‑scale promotional events—detailing planning, capacity and pressure‑test rehearsals, strict change‑freeze, internal gray releases, coordinated on‑call response, thorough link and capacity analysis, monitoring, emergency procedures, cross‑team collaboration, external partner coordination, and post‑event review to ensure resilient system performance.

Large-Scale EventsMonitoringPerformance Testing

0 likes · 17 min read

Stability Assurance Practices for Large‑Scale Promotional Events

HelloTech

Dec 23, 2022 · Cloud Native

Design Principles and Implementation Details of Kubernetes Horizontal Pod Autoscaler and Custom Water Pod Autoscaler

The article explains Kubernetes’ built‑in Horizontal Pod Autoscaler, then details the custom Water Pod Autoscaler (WPA) that extends HPA with dual‑signal (load and SOA registration) detection, dual‑threshold scaling, noise filtering, configurable cooldown, frequency limits, tolerance buffers, and integrated alerting for reliable elastic scaling.

HPAKubernetesMetrics

0 likes · 13 min read

Design Principles and Implementation Details of Kubernetes Horizontal Pod Autoscaler and Custom Water Pod Autoscaler

HelloTech

Dec 15, 2022 · Backend Development

Optimization of Reverse Geocoding Service: Caching, GeoHash, and LRU Strategies

By eliminating unnecessary reverse‑geocode calls, aggregating nearby coordinates with GeoHash, and employing a multi‑layer LRU‑K cache with time‑ and access‑count eviction, the Hellobike map team cut daily requests from 200‑300 million to 20‑30 million while adding fallback and monitoring mechanisms.

CachingGeoHashLRU

0 likes · 13 min read

Optimization of Reverse Geocoding Service: Caching, GeoHash, and LRU Strategies

HelloTech

Nov 28, 2022 · Industry Insights

How Haro’s “Lego” System Revolutionizes Multi‑Team Mobile Page Development

This article analyzes Haro’s end‑to‑end “Lego” system, detailing its background, the multi‑team collaboration challenges of core app pages, the modular architecture spanning product‑ops backend, configurable aggregation services, and a mobile container framework, and the resulting efficiency and stability gains.

backend aggregationdynamic page renderingfrontend framework

0 likes · 15 min read

How Haro’s “Lego” System Revolutionizes Multi‑Team Mobile Page Development

HelloTech

Nov 22, 2022 · Operations

Guidelines for Incident Postmortem and Fault Review

The incident postmortem guideline advocates a dialectical view of failures, rapid low‑severity recovery, and a structured process—covering background, impact scope, timeline replay, deep root‑cause analysis, SMART improvement actions, responsibility assignment, and PDCA‑validated closure—to enhance system resilience, team anti‑fragility, and knowledge sharing.

MTBFMTTRhigh availability

0 likes · 15 min read

Guidelines for Incident Postmortem and Fault Review

HelloTech

Nov 15, 2022 · Backend Development

Investigation of Elasticsearch RestClient Load‑Balancing and Traffic Skew Issues

The investigation revealed that Elasticsearch RestClient’s built‑in round‑robin and dead‑node blacklisting redirected traffic from failed data‑node addresses—mistakenly included in the static IP list—onto a single client node, causing severe load imbalance and timeouts, which were eliminated after correcting the IP list.

ElasticsearchJava ClientLoad Balancing

0 likes · 17 min read

Investigation of Elasticsearch RestClient Load‑Balancing and Traffic Skew Issues

HelloTech

Nov 8, 2022 · Frontend Development

Mastering Virtual Lists in Vue: From Fixed Height to Dynamic Items

This article explains why virtual lists are needed for long scrollable data, defines the concept, walks through a step‑by‑step implementation for fixed‑height items, extends the solution to handle variable heights, and shares practical tips and code snippets for Vue developers.

Virtual ListVuedynamic height

0 likes · 11 min read

Mastering Virtual Lists in Vue: From Fixed Height to Dynamic Items