Network performance
CDN · Global acceleration · Smart routing · Load balancing
When overseas users get a slow site, the server is rarely the problem — the path is. Requests cross continents, traverse unstable cross-border links and detour through congested public transit. We replace that uncontrolled path with a controlled edge path.
If this sounds familiar
- Users in Europe, the US or Southeast Asia see much slower first paint than domestic users, with wild variance
- Access between mainland China and overseas is inconsistent — fine one hour, broken the next
- Origin capacity is fine, but time-to-first-byte still spikes under load
- You already use regional deployments, yet cross-region access is still slow
- You have no visibility into real overseas performance — you learn about it from complaints
- Video, downloads or large-file delivery costs scale linearly with traffic
What we put in place
CDN and edge caching
Put static assets and cacheable dynamic responses at the node closest to the user. The real work is designing cache policy and origin fetch together — not flipping a switch.
Capability detail →Global acceleration (including mainland China)
Dedicated paths for cross-border traffic. Mainland China nodes are operated by JD Cloud, combined with dedicated capacity from CMI and CBC Tech, replacing unpredictable public transit. Serving users in mainland China generally requires an ICP licence issued per province — plan it early.
Capability detail →Smart routing and Anycast
One IP advertised from many locations, so requests land on the nearest healthy node. Smart routing then avoids congested or failing segments in real time.
Load balancing and failover
Traffic orchestration and health checks across origins, clouds and regions — a regional failure becomes a non-event.
Boundaries and prerequisites
- Cross-border paths depend on local regulation and interconnection quality. Serving mainland China requires confirming the compliance route first — it is not purely a technical problem
- Dynamic-heavy workloads (real-time trading, personalised APIs) have limited headroom; gains come from connection reuse and routing, not cache hits
- If your users are concentrated in one market, global acceleration delivers far less than it does for a distributed audience
- Edge caching changes origin behaviour. Decide what can be cached and for how long, or you will serve stale data
Common questions
We already deploy in overseas cloud regions. Do we still need this?
Yes. A cloud region decides where you compute; it does not decide which path the user takes to reach you. Most cross-continent latency comes from public transit and handshake overhead, and this layer acts before requests reach your server.
Can mainland China users reach our overseas service faster?
Yes, subject to the compliance path. Serving users in mainland China usually requires an ICP licence, and in-country nodes are run by local partners. That is a design prerequisite, not a formality to sort out after launch.
How quickly will we see results?
DNS cutover and cache policy take effect within hours. Full tuning of cache rules, origin paths and routing normally needs one to two weeks of real traffic before it converges.