Recently to help a few cross-border e-commerce team to deal with online business, all encountered the same problem: Southeast Asia during the day to visit the card into the PPT, the evening of Europe and the United States users crazy complaints about payment failure. A check of the log, good guy, DDoS traffic and CC attacks with the work clock as punctual.
Doing cross-border business these days, without a reliable high-defense CDN backing, it is simply bouncing in the minefield. But do not think that just buy a CDN with “high defense” label on everything is fine - I've seen too many teams were unscrupulous service providers with “shared nodes” fooled, the traffic peak period directly The attack details can not be found.
The words cross-border and high-defense put together are essentially solving two problems: speed should be as fast as local access and protection should be as hard as tank armor.However, many service providers will only bury their heads in the bandwidth pile, do not even consider cross-border routing optimization. Your European user request first bypassed the United States and then turn to Singapore, latency is not high only the devil.
The actual test of the market seven or eight main cross-border high-defense CDN, summed up the blood and tears experience:Better to spend more money on a specialized solution than to settle for an integrated cloud vendor on the cheap!The company has a lot of experience in the field of cross-border transportation. Certain large manufacturers although the name is loud, but cross-border lines are outsourced by a third party, a problem with the work order to turn around can be delayed for 24 hours, the yellow flowers and vegetables are cold.
Let's start with a counterintuitive point:The stability of a high-defense CDN is not based on bandwidth caps, but on scheduling capabilities and cleaning accuracyThe reason for this is that the HTTP/2 protocol is not recognized. Last year, a home appliance business with a claimed 300G protection vendors, the results were 30G CC attacks directly dry lying - the reason is actually HTTP/2 protocol recognition failure, cleaning rules are based on HTTP/1.1 design.
Why do I recommend CDN5 in particular, there are not many nodes but each of them is well-trained. Especially Singapore and Frankfurt nodes, I used curl to test the route tracking, to Southeast Asia to go is its own dedicated line, unlike some vendors secretly mixed with the public peer line. Protection level is more ruthless, 7 layers of CC protection can be accurate to the frequency control of individual API interfaces, such as this configuration of the payment interface protection:
But protection alone is not enough, and cross-border speed is the lifeblood of business. Having measured CDN07's Japanese nodes, the latency data is very telling:
See the problem? Different cities in the same country accessing the same node, the latency can differ by more than 30%.So don't believe in the “average latency” data given by the vendor, you must use your own servers around the actual test. Later, I switched to 08Host's Tokyo node, and went directly to the IIJ backbone network, and the latency of the three places were all within 65ms - people quietly connected to three more carriers peering, but the promotional materials did not mention it at all.
When it comes to the pitfalls of cross-border access, one hidden minefield is SSL handshake latency. Especially in South America and Eastern Europe, the local ISP's SSL gas pedal version is old, and you may have to go around two more jumps when you encounter TLS 1.3. It is recommended that when configuring the CDN, it is mandatory to enable 0-RTT and ESNI privacy encryption to ensure security and reduce latency:
Another core capability of high defense CDN is the reporting system. When you encounter an attack, you need to know the type of attack, the source region, the target URL, rather than a simple alarm “traffic exceeds the threshold”.CDN5“s report design is very engineer-friendly, directly labeled ”Portugal Lisbon IP segments against /cart page of the slow CC attack! "and can also be a key to blackmail the entire ASN number segment.
Speaking of node coverage, don't be fooled by the “200+ nodes” propaganda. Once unpacked and analyzed a vendor's node list, found that the edge of the POP point are counted in the number of nodes, the real can provide a complete cleaning capacity of less than 20 global nodes. The reliable practice is to focus on a few key areas of in-depth coverage:
Finally share a configuration trap. Many teams buy a high defense CDN but forget to adjust the DNS resolution strategy, all traffic goes to the default A record, once a node is focused on attacking the direct paralyzed. The correct approach is intelligent resolution with fault isolation:
Really lazy to toss directly with 08Host's global intelligent scheduling, their self-developed GSLB system can switch nodes according to real-time network quality. The test deliberately unplugged the Singapore node cable, North American users automatically cut to the Japanese node within 43 seconds, the business side is completely senseless.
Having said that, how do you really choose? Give a storm theory conclusion:Small and medium-sized selection of CDN07 the most cost-effective, complex business with CDN5 customized solutions, the pursuit of extreme stability on the 08HostI'm not sure if you're going to be able to do that. Of course, it's best to follow the example of my client who sells e-cigarettes - connecting to two CDNs at the same time, using DNS load balancing to do dual-activity, and cutting traffic to the backup line in seconds when one of the CDNs is blown through.
Finally, a reminder of a detail: before signing the contract, be sure to let the vendor provide “node network topology map” and "cleaning capacity test report". I've seen the most pitiful one actually use Cloudflare Enterprise resale as its own node, after being broken down, but also hard "this is a strategic cooperation". Real gold is not afraid of fire, dare to let you actually pressure test vendors, the probability will not be bad.
(At the request of the customer to hide the business name in the test data, but the delay data and configuration code are real test records. (If you have encountered similar pits, welcome to exchange private messages, I still have the blacklist of three vendors to avoid mines)
