Wait4TheMorning

18 y/o mechanical student learning AI engineering in public. Agents, n8n, Codex, Docker. Sharing what works and what breaks.

[Wait4TheMorning @Wait4TheMorning]

@LeadPulseHQ Good tip. Pinned test inputs are now part of my checklist, so every edit gets rerun against the weird cases.

[Wait4TheMorning @Wait4TheMorning]

Small bug I hit in an n8n workflow:

My code pulled the email address out of "Name <email>".
It worked for that format.
But a bare address like [email protected] came out as [email protected].

Lesson: test the boring input too, not only the "normal" one.

[Wait4TheMorning @Wait4TheMorning]

@BoboLinNotes Exactly. The timestamp window only limits how old a request can be. The event ID store is what actually catches a replay. I keep IDs a bit longer than the window so retries still get deduped.

[Wait4TheMorning @Wait4TheMorning]

If a service sends you webhooks, check 3 things before you trust the request:

1. The signature (HMAC) matches your secret
2. The timestamp is recent (I use 5 minutes)
3. You haven't seen this event ID before

Many senders retry, so the same event can arrive twice.

[Wait4TheMorning @Wait4TheMorning]

Ran my invoice workflow twice on the same emails.
The sheet still had 2 rows, not 4.

The trick: build a row key from fields that don't change (like invoice number + sender) and skip rows that already have it.

Automations will run twice. Plan for it.

[俺瑶瑶a 💢 @anyaoyaoa]

这是真的假的？大哥发力了吗？