api: /stream & dashboard send X-Accel-Buffering

1 files changed, 5 insertions, 0 deletions

diff --git a/docs/operations.md b/docs/operations.md
index be185f1..7dcdb92 100644
--- a/docs/operations.md
+++ b/docs/operations.md
@@ -125,6 +125,11 @@ location / {
 and the node started with `--user-header X-Remote-User`. The names the proxy gives are
 the users of `--protocol-writers` and of who wrote what ([`api.md`](api.md)).
 
+What streams (`/stream`, the dashboard's events) says `X-Accel-Buffering: no`, so nginx
+passes it on as it comes. The dashboard's events have a keepalive every 15 s; `/stream`
+sends nothing while nothing changes, so nginx ends a quiet one after its
+`proxy_read_timeout` (60 s): raise that for it, or have clients reconnect.
+
 ## What to alert on
 
 From the metrics (`GET /admin/stats` as Prometheus, [`measurements.md`](measurements.md)):