{"id":607,"date":"2025-12-29T15:50:44","date_gmt":"2025-12-29T07:50:44","guid":{"rendered":"https:\/\/www.ddosgj.com\/?p=607"},"modified":"2025-12-29T15:51:03","modified_gmt":"2025-12-29T07:51:03","slug":"vng-cloud-cdn-vcdn-evaluation-real-world-performance-testing-of-actual-access-acceleration-and-ddos-resistance-capabilities","status":"publish","type":"post","link":"https:\/\/www.ddosgj.com\/en\/607-html","title":{"rendered":"VNG Cloud CDN (vCDN) Evaluation: Real-World Access Speed Test Results and DDoS Resistance Capabilities"},"content":{"rendered":"
\n

\"\"<\/h3>\n

I. Why Choose VNG CloudCDN for Evaluation<\/h3>\n

VNG Cloud<\/a> It has established a user base in the Vietnamese market and the Asia-Pacific region for its cloud services, with its CDN service (vCDN) positioned as<\/p>\n

High Availability Acceleration + DDoS Protection<\/strong>and possesses distinctive features in localized access and network link optimization.<\/p>\n

Unlike pure overseas CDNs, it functions more as an option for \u201cregional acceleration and optimized access for domestic and Southeast Asian users.\u201d<\/p>\n

II. Test Environment and Real-World Access Scenarios<\/h3>\n\n\n\n\n\n\n\n\n
Project<\/th>\nExplanation<\/th>\n<\/tr>\n
Testing Party<\/td>\nThe Cybersecurity and Performance Team<\/td>\n<\/tr>\n
Business Type<\/td>\nStatic resources + API<\/td>\n<\/tr>\n
Origin server location<\/td>\nHo Chi Minh City and Singapore VPS<\/td>\n<\/tr>\n
Access Method<\/td>\nVNG Cloud vCDN + CNAME Actual Activation<\/td>\n<\/tr>\n
Testing Cycle<\/td>\nLasting 10 days<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Regarding access configuration,VNG Cloud vCDN<\/a> Supports multiple acceleration types (Web Accelerator, Object Download, VOD, Livestream) and provides real-time data statistics and monitoring capabilities in the console, enabling engineers to quickly evaluate CDN performance.<\/p>\n

III. Packages and Billing Methods (Real-Life Experience)<\/h3>\n

VNG Cloud's vCDN does not feature a traditional \u201cpay-as-you-go interface,\u201d but instead adopts Pre-allocated Traffic + Real-time Usage Statistics<\/strong> The model allows you to view the traffic consumption for each domain in the console when in use.<\/p>\n\n\n\n\n\n\n\n
Billing Items<\/th>\nExplanation<\/th>\n<\/tr>\n
Billing Method<\/td>\nPre-configured Traffic Packages + Real-time Monitoring<\/td>\n<\/tr>\n
Traffic Monitoring<\/td>\nBreak down traffic statistics by domain name<\/td>\n<\/tr>\n
SSL Support<\/td>\nCustomizable certificates or use platform defaults<\/td>\n<\/tr>\n
Multi-domain CNAME<\/td>\nSupports configuring multiple domains based on the package<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Please note that during the trial period, only one CDN domain name can be created, and there is a 100GB traffic limit.<\/p>\n

IV. CDN Acceleration Testing Methodology<\/h3>\n

Acceleration testing focuses on three key metrics: DNS resolution time, Time to First Byte (TTFB), and overall response time.
\nUse curl<\/code> Test multiple regional nodes.<\/p>\n

\r\ncurl -o \/dev\/null -s -w \\ DNS: %{time_namelookup}s\\n Connect: %{time_connect}s\\n TTFB: %{time\r\n\"DNS: %{time_namelookup}s\\nConnect: %{time_connect}s\\nTTFB: %{time_starttransfer}s\\nTotal: %{time_total}s\\nHTTP: %{http_code}\\n\" \\\r\nhttps:\/\/yourvcdn.domain.com\/static\/image.jpg\r\n  <\/code><\/pre>\n
Test nodes: Singapore, Japan, Vietnam, U.S. West Coast<\/p>\n
V. CDN Acceleration Test Results<\/h3>\n\n\n\n\n\n\n\n
Region<\/th>\nTime to First Byte (TTFB)<\/th>\nTotal(s)<\/th>\nHTTP Response Codes<\/th>\n<\/tr>\n
Vietnam (VN)<\/td>\n0.038<\/td>\n0.112<\/td>\n200<\/td>\n<\/tr>\n
Singapore (SG)<\/td>\n0.052<\/td>\n0.136<\/td>\n200<\/td>\n<\/tr>\n
Japan (JP)<\/td>\n0.068<\/td>\n0.158<\/td>\n200<\/td>\n<\/tr>\n
United States (US)<\/td>\n0.138<\/td>\n0.268<\/td>\n200<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Test results indicate that vCDN delivers exceptionally low and stable latency in Vietnam and Southeast Asia, with a significant reduction in latency compared to direct connections without CDN. Latency at European and American nodes is slightly higher but remains within acceptable limits.<\/p>\n
VI. DDoS Attack Stress Testing Solution<\/h3>\n
This stress test primarily simulates a medium-scale HTTP flood attack to observe the impact of CDN layer traffic on normal access and origin server load.<\/p>\n\n\n\n\n\n\n\n
Test Item<\/th>\nExplanation<\/th>\n<\/tr>\n
Attack Type<\/td>\nHTTP GET Flood<\/td>\n<\/tr>\n
Peak requests<\/td>\nApproximately 30k\u201350k requests per second<\/td>\n<\/tr>\n
Duration<\/td>\n15 minutes<\/td>\n<\/tr>\n
Key Observation Points<\/td>\nOrigin Server CPU & User Availability<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
VII. DDoS Stress Test Results<\/h3>\n\n\n\n\n\n\n
stage<\/th>\nHTTP 200<\/th>\nHTTP 403\/429<\/th>\nOrigin server load<\/th>\nAvailability<\/th>\n<\/tr>\n
Before the attack<\/td>\n99.91% TP3T<\/td>\n0%<\/td>\n11%<\/td>\n100%<\/td>\n<\/tr>\n
Under attack<\/td>\n93.0%<\/td>\n6.51 TP3T<\/td>\n17%<\/td>\n99.21 TP3T<\/td>\n<\/tr>\n
After the attack<\/td>\n99.81 TP3T<\/td>\n0.21 TP3T<\/td>\n13%<\/td>\n100%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Under medium-scale attacks, vCDN automatically discards abnormal requests while maintaining high availability for normal user access, effectively controlling pressure on the origin server.<\/p>\n
VIII. HTTP Headers and Cache Validation<\/h3>\n
\r\ncurl -I https:\/\/yourvcdn.domain.com\/static\/image.jpg\r\n  <\/code><\/pre>\n
\r\nHTTP\/2 200 x-cache: HIT via: vCDN-edge\r\n  <\/code><\/pre>\n
IX. Frequently Asked Questions (FAQ)<\/h3>\n
Q1: Does vCDN support custom SSL certificates?<\/strong>
\nYes, it supports uploading custom certificates or using the platform's default certificates.<\/p>\n
Q2: Does the trial offer any free data allowance?<\/strong>
\nFirst-time trial accounts may receive a complimentary 100GB data allowance, but this must be confirmed in the console.<\/p>\n
Q3: Is it suitable for domestic access optimization?<\/strong>
\nVisits to Vietnam and Southeast Asia show significant optimization results; For visits within mainland China, specific nodes require testing.<\/p>\n
Q4: How do I clear the cache?<\/strong>
\nThe console provides a purge cache button by domain name, which can clear the edge cache.<\/p>\n
Personal opinion<\/h3>\n
VNG Cloud's vCDN is more like a regionally robust and performance-stable CDN.<\/p>\n
Performance in Vietnam and neighboring countries outperforms direct connections, maintaining service availability even under moderate DDoS scenarios.<\/p>\n
It is not a CDN that pursues the ultimate in global node coverage, but one that delivers reliable performance in specific regions and specific business scenarios.<\/p>\n
For users seeking to reduce latency during Southeast Asian visits while balancing security and control, vCDN is an option worth serious consideration.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"
I. Why Choose VNG Cloud CDN for Evaluation VNG Cloud possesses a significant user base within the Vietnamese market and the broader Asia-Pacific region for its cloud services. Its CDN offering (vCDN) positions itself as a solution for high-availability acceleration + DDoS protection, with distinctive features in localized access and network link optimization. Unlike purely overseas CDNs, it functions more as an option tailored for \u201cregional acceleration and optimized access for domestic + Southeast Asian users.\u201d II. Test Environment and Real-world Access Scenarios Project Description Tester Our Network Security and Performance Team Service Type Static Resources + API Origin Server Location Ho Chi Minh City and Singapore VPS Access Method VNG Cloud vCDN<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[11],"tags":[57,141,140],"collection":[],"class_list":["post-607","post","type-post","status-publish","format-standard","hentry","category-cdn-performance","tag-cdn"],"_links":{"self":[{"href":"https:\/\/www.ddosgj.com\/en\/wp-json\/wp\/v2\/posts\/607","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ddosgj.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ddosgj.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ddosgj.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ddosgj.com\/en\/wp-json\/wp\/v2\/comments?post=607"}],"version-history":[{"count":2,"href":"https:\/\/www.ddosgj.com\/en\/wp-json\/wp\/v2\/posts\/607\/revisions"}],"predecessor-version":[{"id":619,"href":"https:\/\/www.ddosgj.com\/en\/wp-json\/wp\/v2\/posts\/607\/revisions\/619"}],"wp:attachment":[{"href":"https:\/\/www.ddosgj.com\/en\/wp-json\/wp\/v2\/media?parent=607"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ddosgj.com\/en\/wp-json\/wp\/v2\/categories?post=607"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ddosgj.com\/en\/wp-json\/wp\/v2\/tags?post=607"},{"taxonomy":"collection","embeddable":true,"href":"https:\/\/www.ddosgj.com\/en\/wp-json\/wp\/v2\/collection?post=607"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}