diff options
Diffstat (limited to 'keyserver/internal/device_list_update.go')
| -rw-r--r-- | keyserver/internal/device_list_update.go | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/keyserver/internal/device_list_update.go b/keyserver/internal/device_list_update.go index acbcd5b8..e317755e 100644 --- a/keyserver/internal/device_list_update.go +++ b/keyserver/internal/device_list_update.go @@ -22,12 +22,13 @@ import ( "sync" "time" - fedsenderapi "github.com/matrix-org/dendrite/federationapi/api" - "github.com/matrix-org/dendrite/keyserver/api" "github.com/matrix-org/gomatrixserverlib" "github.com/matrix-org/util" "github.com/prometheus/client_golang/prometheus" "github.com/sirupsen/logrus" + + fedsenderapi "github.com/matrix-org/dendrite/federationapi/api" + "github.com/matrix-org/dendrite/keyserver/api" ) var ( @@ -66,12 +67,14 @@ func init() { // - We don't have unbounded growth in proportion to the number of servers (this is more important in a P2P world where // we have many many servers) // - We can adjust concurrency (at the cost of memory usage) by tuning N, to accommodate mobile devices vs servers. +// // The downsides are that: // - Query requests can get queued behind other servers if they hash to the same worker, even if there are other free // workers elsewhere. Whilst suboptimal, provided we cap how long a single request can last (e.g using context timeouts) // we guarantee we will get around to it. Also, more users on a given server does not increase the number of requests // (as /keys/query allows multiple users to be specified) so being stuck behind matrix.org won't materially be any worse // than being stuck behind foo.bar +// // In the event that the query fails, a lock is acquired and the server name along with the time to wait before retrying is // set in a map. A restarter goroutine periodically probes this map and injects servers which are ready to be retried. type DeviceListUpdater struct { |