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Bilibili Tech
Bilibili Tech
Apr 22, 2025 · Operations

Client‑Side DCDN Disaster‑Recovery Drills and Automated Testing at Bilibili

Bilibili performed client-side DCDN disaster-recovery drills using a self-built HTTPDNS to simulate DNS, CDN, and SSL faults; automated scripts across Android, iOS, and Web injected errors, measured rendering latency, validated immediate downgrade to commercial services, refined fallback strategies, and demonstrated near-zero user impact during a real network incident.

BilibiliDCDNHTTPDNS
0 likes · 13 min read
Client‑Side DCDN Disaster‑Recovery Drills and Automated Testing at Bilibili
vivo Internet Technology
vivo Internet Technology
Feb 19, 2025 · Backend Development

vivo HTTPDNS End-to-End Integrated Solution: Architecture, Optimizations, and Business Impact

vivo’s end‑to‑end HTTPDNS solution integrates a client SDK, high‑performance service, unified scheduling gateway, and full‑link monitoring, cutting resolution latency by 36%, boosting DNS success to 99.85%, handling 1.5 billion queries daily, and preventing hijacking and misblocking across its ecosystem.

Backend DevelopmentDNS ResolutionHTTPDNS
0 likes · 19 min read
vivo HTTPDNS End-to-End Integrated Solution: Architecture, Optimizations, and Business Impact
Volcano Engine Developer Services
Volcano Engine Developer Services
Aug 8, 2024 · Cloud Native

How HTTPDNS Edge Migration Boosted Performance and Cut Costs by 35%

This article details the end‑to‑end migration of ByteDance's HTTPDNS service from a central cloud to edge nodes, covering technical challenges in service placement and traffic scheduling, the edge‑native solutions implemented with visualization models and GTM, and the resulting performance, cost and reliability gains.

HTTPDNSPerformance OptimizationTraffic Scheduling
0 likes · 13 min read
How HTTPDNS Edge Migration Boosted Performance and Cut Costs by 35%
HaoDF Tech Team
HaoDF Tech Team
Feb 2, 2023 · Mobile Development

Android Client Network Optimization: Framework Unification, HttpDns Integration, and Performance Enhancements

This article details how an Android team unified multiple network libraries into OkHttp, integrated HttpDns to bypass carrier DNS hijacking, migrated to HTTPS and HTTP/2, and applied a series of performance and security optimizations that markedly improved request speed, reliability, and user experience across diverse mobile network conditions.

AndroidHTTP2HTTPDNS
0 likes · 22 min read
Android Client Network Optimization: Framework Unification, HttpDns Integration, and Performance Enhancements
Bilibili Tech
Bilibili Tech
Dec 30, 2022 · Operations

Self-Developed HTTPDNS Service: Cost Estimation, Architecture, Optimization, and Lessons Learned

To cut the hundreds‑of‑thousands‑yuan monthly bill of a commercial HTTPDNS service, the team built a multi‑region, self‑hosted HTTPDNS platform, estimated to slash costs by up to 90%, then resolved unexpected TLS bandwidth waste by improving connection reuse, ultimately achieving over 80% savings and planning a hybrid‑cloud deployment.

BGPCost OptimizationDomain Hijacking
0 likes · 12 min read
Self-Developed HTTPDNS Service: Cost Estimation, Architecture, Optimization, and Lessons Learned
NetEase Smart Enterprise Tech+
NetEase Smart Enterprise Tech+
Aug 24, 2021 · Information Security

How NetEase Cloud IM SDK Prevents DNS Hijacking with HttpDNS High‑Availability

This article explains the DNS hijacking threat, shares a real incident affecting NetEase Cloud IM, and details a comprehensive high‑availability architecture—including HttpDNS, laddered HTTP requests, caching strategies, and SNI handling—that protects the SDK from DNS attacks and ensures reliable service.

CacheDNS hijackingHTTPDNS
0 likes · 13 min read
How NetEase Cloud IM SDK Prevents DNS Hijacking with HttpDNS High‑Availability
Programmer DD
Programmer DD
Jul 22, 2021 · Fundamentals

Mastering DNS: From Basics to HTTPDNS and Global Load Balancing

This article explains the role of DNS in mobile network performance, details DNS hierarchy, authoritative, recursive and public DNS, explores common DNS problems such as ISP hijacking and caching, and introduces advanced solutions like GSLB, intelligent DNS, and HTTPDNS with practical command‑line examples.

DNSGSLBHTTPDNS
0 likes · 17 min read
Mastering DNS: From Basics to HTTPDNS and Global Load Balancing
Baidu App Technology
Baidu App Technology
Jul 13, 2021 · Mobile Development

Baidu Live Streaming Startup Performance Optimization: Technical Practices and Solutions

Baidu’s live‑streaming team cut startup latency by dissecting the three‑phase launch process, streamlining business‑logic handling, employing HTTPDNS pre‑resolution, forcing first‑frame rendering, low‑bitrate fallback, pre‑loading kernels, direct H.264 SPS/PPS parsing, and HLS m3u8 pre‑fetching, achieving sub‑3 ms DNS and hundreds‑millisecond overall gains.

HLS StreamingHTTPDNSMobile Development
0 likes · 11 min read
Baidu Live Streaming Startup Performance Optimization: Technical Practices and Solutions
TAL Education Technology
TAL Education Technology
May 20, 2021 · Operations

Implementing HttpDNS on Windows via API Hook for WinInet

This article explains why HttpDNS is used to improve DNS resolution for a WinInet‑based installer, compares two implementation schemes, and details a Windows API Hook solution—including inline hook techniques, detours usage, and custom GetAddrInfoEx handling—to achieve transparent, secure domain resolution on Windows clients.

API HookDNS over HTTPSHTTPDNS
0 likes · 12 min read
Implementing HttpDNS on Windows via API Hook for WinInet
vivo Internet Technology
vivo Internet Technology
Sep 2, 2020 · Fundamentals

Understanding DNS and WebSocket: From Dig Commands to Real‑Time Connections

This article provides a systematic, hands‑on guide to DNS fundamentals—including dig queries, hierarchical lookups, Wireshark packet analysis, traditional DNS drawbacks, and HTTPDNS solutions—followed by a deep dive into WebSocket mechanics, handshake, frame structure, and security considerations, all illustrated with practical examples and code.

DNSHTTPDNSNetwork Protocols
0 likes · 21 min read
Understanding DNS and WebSocket: From Dig Commands to Real‑Time Connections
Baidu App Technology
Baidu App Technology
Dec 26, 2018 · Mobile Development

Deep Network Optimization in Baidu App: DNS and HTTPDNS Practices

To combat carrier DNS hijacking and latency, Baidu App implements a comprehensive HTTPDNS solution that replaces system DNS with secure, BGP‑routed queries, adds layered strategies for disaster recovery, caching, IP selection, and integrates custom modules into Android’s OkHttp and iOS’s Cronet, dramatically lowering hijack rates while modestly improving response times.

AndroidDNSHTTPDNS
0 likes · 20 min read
Deep Network Optimization in Baidu App: DNS and HTTPDNS Practices
21CTO
21CTO
Jun 10, 2016 · Information Security

Understanding HTTP & DNS Hijacking: Causes, Risks, and Practical Countermeasures

This article explains what HTTP and DNS hijacking are, illustrates real-world examples, analyzes root causes such as ad injection and malicious attacks, and presents concrete anti‑hijacking techniques like data legitimacy checks, timeliness verification, HttpDNS, and operator cache mitigation.

DNS hijackingHTTP hijackingHTTPDNS
0 likes · 10 min read
Understanding HTTP & DNS Hijacking: Causes, Risks, and Practical Countermeasures
21CTO
21CTO
Dec 15, 2015 · Frontend Development

How Taobao Cut Mobile H5 Load Times by 70%: The 521 Rule and Real‑World Optimizations

This article details how Alibaba's mobile Taobao app tackled severe H5 performance problems in 2015 by introducing the 521 rule, extensive system analysis, and a series of front‑end, network, and native optimizations—including HTTPDNS, SPDY, image compression, and pre‑loading—that collectively reduced load times dramatically and boosted user metrics.

HTTPDNSMobile WebSPDY
0 likes · 17 min read
How Taobao Cut Mobile H5 Load Times by 70%: The 521 Rule and Real‑World Optimizations