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Appendix

Connection Matrix

Every connection between components, with protocol, direction, and purpose

Every connection between components, with its protocol, direction, and purpose. One row per arrow in the topology diagram.

FromToProtocolPurpose
BrowserCloudflare edgeHTTPSEvery app, editor and console request
Cloudflare WorkerALBHTTPSProxied app requests with host and path as query params
ALBHTTP, WS, git, sandbox-proxy rolesHTTPRouted by host
HTTP roleAurora via RDS ProxyPostgreSQL over TLSReads and writes
Every roleValkeyRESPCache, events, coordination
Every roleS3HTTPS via gateway endpointObjects in the workspace's region
HTTP roleSandbox orchestratorHTTP, internal routeProvision, stop, pool state
Sandbox orchestratorUntrusted Kubernetes APIHTTPS over peeringCreate, watch, label, delete pods
HTTP roleRelease sandboxHTTP over peering, worker portExecute a method
Release sandboxHTTP roleHTTPS via callback originDatabase queries, hook endpoints, model calls
Sandbox-proxy roleDev boxHTTP and WebSocket over peering, dev-box portPreview, control channel, language server
Git roleS3HTTPSMirror every push
Git roleJob runner via orchestratorHTTPCompile a release
Worker rolesSQSHTTPSLong-poll queues
HTTP roleFirehoseHTTPSAudit events
Model serviceBedrockHTTPS over PrivateLinkInference
Model serviceFirst-party providersHTTPS via NATInference
Worker roleSESHTTPSOutbound email
InternetNLB to mail-inbound roleSMTPInbound email
Voice workerLiveKitWebRTC and WebSocketMedia
S3SNS to SQSEventsFile scan triggers
ProvisionerTrusted Kubernetes APIHTTPSDedicated Qdrant StatefulSets