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#postmortem

Writing and sharing blameless postmortems that drive meaningful improvements.

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Telstra outage explained: how one GPS card set the network to 2006

Telstra outage explained: how one GPS card set the network to 2006

Comments
9 min read
How a race condition stopped UK air traffic control for six hours

How a race condition stopped UK air traffic control for six hours

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9 min read
8h40 com todos os dados e nenhum aviso

8h40 com todos os dados e nenhum aviso

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2 min read
Address Space Exhaustion in Production

Address Space Exhaustion in Production

Comments 4
8 min read
The Agent That Wouldn't Copy a File

The Agent That Wouldn't Copy a File

Comments 1
8 min read
Cloudflare outage 2019: how one regex caused 27 minutes of 502s

Cloudflare outage 2019: how one regex caused 27 minutes of 502s

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8 min read
A "Review-Safe" Cookie Banner Blinded 98% of My Analytics for 36 Hours (Postmortem)

A "Review-Safe" Cookie Banner Blinded 98% of My Analytics for 36 Hours (Postmortem)

Comments 3
5 min read
Postmortem: o crédito duplicado que um F5 criava

Postmortem: o crédito duplicado que um F5 criava

Comments 1
4 min read
Knight Capital: how a reused feature flag lost $460 million

Knight Capital: how a reused feature flag lost $460 million

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Comments 7
9 min read
Knight Capital: How One Forgotten Server Lost $440 Million in 45 Minutes

Knight Capital: How One Forgotten Server Lost $440 Million in 45 Minutes

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4 min read
My Cron Job Double-Fired and Placed the Same Order Twice — Here's My Postmortem

My Cron Job Double-Fired and Placed the Same Order Twice — Here's My Postmortem

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Comments 1
5 min read
An Em Dash Took Down My Entire Automation Stack for Five Days

An Em Dash Took Down My Entire Automation Stack for Five Days

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4 min read
Our Post-Mortem Was So Good We Never Fixed the Bug

Our Post-Mortem Was So Good We Never Fixed the Bug

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Comments
10 min read
A 16-second clock drift falsely tripped my trading bot's kill switch. A postmortem.

A 16-second clock drift falsely tripped my trading bot's kill switch. A postmortem.

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4 min read
stripe-python v15 Doesn't Subclass dict. That One Line Broke My Delivery Script.

stripe-python v15 Doesn't Subclass dict. That One Line Broke My Delivery Script.

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5 min read
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