Opening the field notes · Labs
Setting up the experiment.
Opening the field notes · Labs
Setting up the experiment.
Interrupt a synthetic device fleet and compare fixed-interval retries with exponential backoff.
TryDisconnect one client, then advance 500 ms. It reconnects while the other nine remain connected.
Watch forWith the default No backoff policy, only that client retries; it reconnects at 500 ms while the other nine stay connected.
Synthetic model of this capability; it does not recreate production.
Skill practicedReason about client reconnection across device sessions
Connection to my workMy Seronic Hub 360 work included a Flutter/BLoC client for 10+ WebSocket devices; this model isolates synthetic retry timing.
Disconnect one synthetic client while the shared service remains available, or interrupt the whole fleet. With No backoff selected, each attempt is scheduled on a fixed 500 ms cycle; this means no added backoff, not a zero-delay retry. Compare it with illustrative exponential backoff. Each row shows transport state while a generic app-state indicator remains available through the interruption. The timings and policy are teaching inputs, not Seronic configuration or a reliability guarantee.
A disconnected client must decide when to try again. This comparison schedules the No backoff policy on a fixed 500 ms model cycle; identical cycles can align. Exponential delays increase the wait after repeated failures, while jitter can spread clients that would otherwise share the same schedule. Real reconnect behavior also depends on detection, protocol state, subscriptions, server limits, platform lifecycle, and delivery semantics, which this client-side teaching model does not simulate.
I built Seronic Hub 360’s Flutter/BLoC client around 10+ concurrent WebSocket device connections, automatic exponential-backoff reconnect, and retained app state. This deterministic teaching model helps me explain the client-side connection lifecycle and why retry timing matters when several sessions recover together. It does not reproduce Seronic settings, device protocols, server behavior, or production telemetry.
See the broader engineering briefTen example client sessions, one local clock. The retry delays and service interruption are illustrative controls; this model does not represent Seronic's production configuration or server behavior.
Choose a recovery policy
Connection events
Synthetic clock
A run uses the policy and settings selected when its interruption starts. Reset the experiment to choose another schedule.
10 connected, 0 retrying, 0 stopped after the illustrative retry limit. App state is retained in this model.
Connected sessions
10
Of ten synthetic device sessions
Waiting to retry
0
No backoff · 500 ms cycle
Synthetic clock
0ms
Advance in explicit 500 ms steps
App state
Retained
Device 01 · separate from connection state
10 SYNTHETIC CLIENT SESSIONS
Device 01
0 retry attempts · app state retained
Device 02
0 retry attempts · app state retained
Device 03
0 retry attempts · app state retained
Device 04
0 retry attempts · app state retained
Device 05
0 retry attempts · app state retained
Device 06
0 retry attempts · app state retained
Device 07
0 retry attempts · app state retained
Device 08
0 retry attempts · app state retained
Device 09
0 retry attempts · app state retained
Device 10
0 retry attempts · app state retained
DEVICE 01
The example stops retrying after 5 failed attempts. Real delivery, resubscription, health detection, and platform lifecycle are outside this model.