[PATCH datacenter-manager 0/4] implement back-off mechanism for

[Dominik Csapak <d.csapak@proxmox.com>]

When a remote is not reachable (e.g. network outage, crashes, etc), PDM
tries to connect on every attempt with a timeout. This leads to heavily
delayed api calls in the PDM UI. To counter that, this series implments
a basic back-off mechanism that increases the time between actual api
calls in an exponential way (up to a maximum).

Advantage are less failed api calls, but the downside is that it now
takes a while potentially to mark a remote as reachable again.

For details on ideas for that see the notes in patch 2/4

Note: patch 1/4 is related, but it's a fix on its own (see the notes
there for further details.)

Dominik Csapak (4):
  server: connection: multi client: use correct client error for
    retrying
  server: remote cache: prepare for back-off mechanism
  server: connection: multi-client: use back-off state from remote cache
  server: pbs client: rework to use the back-off mechanism from remote
    cache

 server/src/connection.rs       |  42 +++++++--
 server/src/pbs_client.rs       | 167 +++++++++++++++++++++++++--------
 server/src/remote_cache/mod.rs | 139 +++++++++++++++++++++++++++
 3 files changed, 300 insertions(+), 48 deletions(-)

-- 
2.47.3