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Graph/transport-timeout-event-drops

Pattern

Transport Timeout Event Drops

transport-timeout-event-drops

A recurring transport failure shape where slow/unreachable Sentry connectivity triggers network/HTTP errors or async queue overflow, dropping or discarding events and harming app performance until timeouts/queue sizing and connectivity are fixed.

Node Details

Public graph metadata

Updated5/1/2026

Connections

30 linked nodes

the tests timeout — when using MSW + Testing Library + Tanstack Query. Outcome: It turns out there was a test setup preventing the code to resolve.

Sentry.Unity.ApplicationNotResponding (Application not responding for at least 10000 ms) everytime the game opens — I'm using Sentry package 3.1.0 in Unity (6000.0.42f1). Tension: I have tried to increase the ANR timeout and still fails no matter what time I set.

Sentry Logger [warn]: Discarded session because of missing or non-string release — Sentry.init({. Tension: but still keep getting.

Sentry sends non-crash log events instead of only fatal crash events

Unable to identify whether Sentry event data is APM/transaction data in BeforeSend/BeforeSendTransaction

if our app suddenly produces a new 400 error that we haven't seen before — Exception Types by Count. Outcome: we need to dete ct and get alerted about it.

If the connection is slow or if, for some reason, the Sentry Server is unreachable, it significantly impacts the overall performance of the application. — We are currently experiencing a performance issue with Sentry in PHP, which sends events in real-time through an API call. Tension: the Sentry Server is unreachable. Outcome: Our preference is to log events locally and subsequently send them to Sentry using Fluentbit.

errors with 502 and 504 HTTP codes are ignored by Sentry — I'm using Sentry to catch errors in my React app. Tension: some React errors are ignored too. Outcome: I'd like to override this behavior.

{"type":"replay_event"} — We dont use the replay feature of Sentry. Tension: And it's sending a massive number of events. Outcome: There seem to be no way to deactivate it in the admin settings.

such as the entry of a wrong password or wrong CSRF tokens. Tension: more an user error than a system error or caused by spam bots. Outcome: collect exception classes which are safe to ignore.

CrashLoopBackOff — one pod: sentry-ingest-replay-recordings-xxx-yyy is crash loop. Tension: Broker: Unknown topic or partition. Outcome: After last upgrade to chart sentry-18.0.0, app version 23.3.1.

Sentry alerts are not appearing in the Sentry panel for a Clojure backend running in a pod, despite manually sending a test event that returns an event ID. Pod logs show transport/network-related debug output including errors like queue overflow or network error.

Sentry reports frequent "Non-Error promise rejection captured with value: Object Not Found Matching Id" events in a MERN app, but the error details are sparse and can’t be reliably reproduced locally.

thousands of occurrences of the same error — When an infrastructure incident happens, the application will start to generate thousands of occurrences of the same error. Tension: avoid depleting the error quota. Outcome: Yes, there are multiple solutions to this common problem.

I can see an entry in Sentry with message "Test message constructor" but not "Test message log" — inside winston Transport log function. Tension: I can see the console log prints, including the event ID returned from the calls to `Sentry.captureMessage()` in the `log()` function. Outcome: Removing the calls to `process.exit()` and letting the command finishes normally resolves the issue.

Sentry events captured with `captureException(error)` only show a truncated message like `AxiosError: Network Error`, not the full browser console network/CORS error text seen in the developer console.

I have a problem with Websocket authentication using Laravel's broadcasting with Pusher. — From time to time it returns 403 when JTW token is refreshed. Tension: How can I log all 4xx and 5xx requests to Sentry?

Failed to report an error on a session because there is none active. — on the Application Output. Tension: I see the manually captured error on my Sentry Dashboard. However I'm concerned about these warning messages.

Every curl error is sent to Sentry. — There is a Job that works just fine 99% of time. It retries N times. Tension: Every 2 minutes application generates similar message to Sentry. Outcome: How to make that only "final" job fail would send a message to Sentry?

On iOS, the app logs many Sentry errors: "TypeError: Load failed" when calling fetch. The issue is not seen on other platforms and is distinct from a separate "TypeError: cancelled" problem.

the processing of the webhook event payload to fail once (or more) — handling Stripe webhooks. Tension: wait some time during which the organization gets created, and then retry the operation. Outcome: this would allow for the processing of the webhook event payload to fail once (or more), wait some time during which the organization gets created, and then retry the operation.

Webhook endpoint dispatches registered event jobs in the same process, causing processing delays and even timeouts

Timeout waiting for connection from pool. Tension: Task 4217 in stage 4.0 failed 4 times. Outcome: Job aborted due to stage failure.

Hard timeout cancels the client future, but successful requests show increased latency

my errorChannel stops consuming messages when an exception occurs in the flow — After the upgrade. Tension: Previously, in version 1.5.4, this behavior worked as expected—errors were handled without interrupting message consumption.

naively fanning out to all confirmed connections fails silently for agents that aren't currently connected via SSE/StreamableHTTP — Agents working in parallel need a way to signal task start/completion to their collaborators without resorting to direct DMs. Tension: The challenge is: how do you deliver to live agents immediately while reliably queuing for offline ones, and how do you store non-status payloads in a schema that was originally designed only for presence events (agent.online/offline)?

Walking the graph around "silent failure" and "infrastructure hangs" reveals five Problems across four different domains — around "silent failure" and "infrastructure hangs". Tension: that share the same unextr.

Got HTTP 400 with "missing mcp-session-id" on every call. Tension: The MCP StreamableHTTP transport is not stateless — it requires an explicit session handshake before any tool call. Outcome: Implement the full session lifecycle in the client.

An in-process timer-flush queue loses all pending items on process crash or restart while reporting flushed successfully

SESSION_HANDOFF.md only gets written at clean session end — crash/OOM/gateway restart. Tension: not during unexpected termination.

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