System designLevel 2
Media and uploads
Easynot started
Mediumnot started
Hardnot started
Media & streaming systemsPlaying video seamlessly even when your train enters a tunnel.3 minLarge file uploadsWhy you should never upload a 5GB video directly to your Node.js API.3 minResumable large-file uploadSplit the file into chunks so a dropped connection costs you one chunk, not the whole upload.4 minRTP media relayA relay forwards voice and video packets between callers in real time, fast enough that a dropped one is better skipped than waited for.4 minVideo conferencing SFU networkingEvery camera sends one stream up; a smart router fans each stream out to everyone else, no re-encoding, just forwarding.3 minVoIP SIP signaling protocolSIP is the ringing and the hello, it sets up the call; the voice itself rides separately once both sides agree.3 min