Chris Evans
@evnsio
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Co-founder and CPO at @incident_io 🔥 Previously Tech Director of Platform & Reliability at @monzo .
Hertfordshire
Joined February 2009
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Pinned Tweet
It's wild that a matter of weeks after launching On-call, world-class engineering organizations like Intercom have managed a wholesale migration to it.
Hundreds of schedules, people and alerting integrations all moved over without a hitch ✨
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I recently spoke about the incident response tooling we built at
@monzo
. Due to some nice feedback, we've released an open source version, called Response ⚡
Feedback and PRs welcome!
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Anyone else get the mild panic when you're writing a multi-line slack message in a big channel, and you can't remember whether it's shift, ctrl or cmd + enter to go to a new line?
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Shared in our Slack workspace today...
$29 for a Ham & Cheese Sandwich in NYC. I'd begrudge paying more than £3 for this in London.
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I'm so excited to share that
@incident_io
has the backing of
@IndexVentures
,
@PointNineCap
, and some incredible angels to supercharge the next stages of our growth and development.
Cue all of the relevant emoji: 🚀🔥 🏎️ 📈 🎉
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After 3.5 years of incredible, challenging and rewarding years, I’ve officially finished my stint at
@monzo
.
It had to be something special to pull me away, and founding
@incident_io
pretty uniquely fits that bill. Couldn't be more excited!🔥
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Startups are hard and all, but did anyone tell you how enjoyable it is getting a thing off the ground with a group of lovely, smart people?
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It turns out today is my 1 year anniversary
@monzo
. On reflection I've learnt and done more here in a year than I have anywhere else before. It's not always easy, but it is deeply rewarding to help build something with the potential to have such a positive impact on so many 🚀
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Huge news!
@incident_io
is now the official sponsor of the mighty Baldock Crusaders U7s football team ⚽🏆
Next stop, the
@premierleague
😉
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This is a fantastic write up of an incident involving a signal failure on the rail network. It'd be great to see the other rail companies follow this example 👏
Yesterday, passengers travelling with
@SouthernRailUK
,
@TLRailUK
+
@GatwickExpress
endured an awful evening after we lost the ability to run trains on the busiest part of our network, shown in the picture, for over an hour.
Here is what happened... 1/
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It blows my mind that the little side hustle we started in 2021 has grown into this. A team of 10 wonderful people on a big mission 🚀
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Yesterday, I had the pleasure of bumping into
@kelseyhightower
.
I've been a big fan for years, and literally wanted to say thanks. Despite catching him on the move, he suggested we take the time to sit and talk properly.
A stellar human being, and example to us all 💙
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Interested in how we monitor what's going on with Monzo's systems? I wrote up how we do it with
@PrometheusIO
here 👇
Following on from the Reliability Report we published earlier this week, here's a technical deep-dive into the tools and systems we use to keep an eye on things 👀
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Recording product demos is hard. As promised, here's a small selection of the bits that didn't go quite so well when I was recording mine... 🤬🎬
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Here's the video for my
@doxlon
talk on Monzo Incident, a tool we've developed to help us respond to, and learn from incidents 👩🚒🔥
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Two minutes until I'm live, talking about Microservices at Monzo 😬
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What an absolute treat to have
@GergelyOrosz
stop by
@incident_io
HQ! Big fans of his work and lovely to meet in person 🙂
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I've been working on a new
@incident_io
feature to help with complex decision making and guidance in incidents.
e.g. Rather than check a doc to know if you should report a GDPR data breach, your Data Privacy team can configure a Decision Flow for you to follow, right in Slack.
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@QuinnyPig
Actually, Corey, if you check our SLOs you'll find we're perfectly within error budget. Let production burn.
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Very excited to announce I'll be joining the wildly talented
@peterejhamilton
and
@sjwhitworth
building - the best way to respond to and learn from incidents 🔥🚀
Delighted to share that
@evnsio
is joining the team! The best way to respond to and learn from incidents just got a little better 🚀
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My 5yo had stop on his way to school today as his feet were hurting. Turns out he'd tried to smuggle a lego person in each shoe 👌
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Realised today that I haven't had to think about nodes, pods, services, overlay networks, or any thing else related to Kubernetes for over 6 months now.
It's an incredible platform, but I'm loving not caring about infra with Heroku.
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It's not been a great few days for Monzo. Rest assured we're going to learn from this, and we'll share all the gnarly details 🔜
We had some issues yesterday which might have affected you. We've fixed what went wrong and things are now back to normal.
We're really sorry about this, and will share a full review of what happened with you soon.
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📟 On-call Compensation
The results of mine and
@spikelindsey
's on-call survey are now available at . There's a link from there to the raw data that people were willing to have shared too. Big thanks to everyone who helped fill this out!
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I've always been a bit of a calendar nerd, keeping my events colour coordinated so I can quickly see what my day looks like.
Recently I found out you can make this happen automatically ✨
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Full house at
#slackfrontiers
London today. If you're interested in how
@monzo
uses
@SlackHQ
to deal with incidents, come see me speak about it this afternoon! 🔥
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There's nobody I'd rather be building a company with than
@peterejhamilton
and
@sjwhitworth
. Good vibes in Edinburgh with the whole
@incident_io
team.
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This is also true of
@Monzo
and we're yet to have an outage due to region failure. We've also built many improvements to the platform with the time we would have spent chasing the multi-region hype.
Fun fact: is served from a single region. Don't buy the whole 'you need multi region' thing too early. It is often not a differentiator or requirement and it will slow development down considerably.
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Final day in our first New York office today. Feels like quite a milestone to outgrow the space, and nice to say goodbye properly as a founding team 🙂
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Our Cassandra Cluster just served over 300,000 reads per second. Incredible work from the team to get to this point, and amazing to be able to get these metrics using
@suhailpatel
's 🤯
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I'm a little bit in love with our laser etched
@incident_io
water bottles, courtesy of
@MOO
✨
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Our outbound requests to the
@SlackAPI
over the last 24 hours at
@incident_io
.
See if you can spot where I made an optimisation 👀
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New coat of paint in my home office and I'm a little bit in love! 🎨
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@AWSSupport
@ScribblingOn
Have you ever tried to purchase RIs through the console? Selecting the instance type overflows the screen and has done forever. It's super irritating, especially when spending hundreds of thousands of dollars.
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Is there a greater feeling than finding a GitHub issue describing the exact situation you're facing, along with a reply detailing exactly how to resolve it?
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We (myself and
@spikelindsey
) are conducting some research into on-call compensation. If you can spare 5 minutes, we'd hugely appreciate your help in completing this questionnaire 🙏 If you could RT for reach that'd be amazing too 🙂
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I think this might be one the very best episodes of
@lennysan
’s Podcast.
A veritable stream of concrete, clear and actionable advice for any B2B marketer ✨
Lenny's Podcast full episodes now native on
@X
!
Meltem Kuran Berkowitz (
@meltemkuran
) is Head of Growth at
@Deel
, which she helped grow from $0 to an astounding $300m ARR in under 3 years.
In our conversation, Melem shares:
[6:32] How Deel found success leveraging low-cost
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Today is my two year Monzoversary! What an absolute rollercoaster of awesomeness 🎢 🚀
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Properly kitting out my home office for video calls is one of the best investments I've made. Makes a huge difference to be well lit, in 4k, and with good audio quality ✨
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Myself and
@suhailpatel
spoke at
@AWSreInvent
last month about the Monzo platform, and how we use it to process payments in
@awscloud
💸
Sound interesting? The recording is available here 👇
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People often ask what the difference is between
@incident_io
and one of our competitors, Rootly.
The answer is simple. We're combining our domain expertise, engineering skills and product design capabilities to build an world-class incident management platform.
They, on the
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$34M is a lot of money, but what really excites me is having everything we need to create more feedback like this, whilst working with some of the smartest people I know 🧡🔥
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This visualisation is mind-blowing. If you want to know more, and happen to be at
@AWSreInvent
in December,
@suhailpatel
and I will be talking about this and the rest of
@monzo
's technical infrastructure then.
Here's the live request flow on a large subset of the 1500+ microservices on the
@MakingMonzo
Platform. A lot of things are involved in running a bank!
If you used the
@monzo
app at around 3pm today, you might be represented😃
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I often say we're a boring customer in the eyes of
@awscloud
. Lots of EC2, EBS, S3, etc, but we combine those things to run a scalable modern platform. I expect some of those services to change in 2020. Running everything yourself is a costly and often undifferentiated effort.
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Finally succumbed to the pressure and onboarded with
@Superhuman
today.
It quite literally doesn't feel like email anymore. Keyboard shortcuts are slick and intuitive, and the whole flow of dealing with new messages just instantly clicks.
Incredible job
@rahulvohra
& co 👏
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@type__error
When it's not CORS it's CSPs. And when CSPs arent the problem it's DNS. Root cause: acronyms.
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My new favourite game is spotting the people who are clearly talking over slack during video calls. Big giveaway when two people start smiling simultaneously 🙂
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One the recurring issues I've seen in tech is the loss of context on decisions over time. Decision records can combat this, but the friction of creating a doc is often enough to put people off. I've written a Slack integration to help combat this
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Here's a behind the scenes look at how we use horizontal and vertical pod autoscaling to dynamically scale the
@monzo
microservice platform 🚀
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We went chocolate making with the
@incident_io
team yesterday. After this monstrosity, we've decided
@sjwhitworth
will stick to CEO'ing 🦭
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Dear
@pagerduty
. I have literally never wanted to override a part of my on call shift with myself, and yet I make this same mistake every. single. time.
Why is this even an option?!
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So
@tesco
has been offline for over 24 hours now, and the only comms we have is this tweet.
A perfect example of how not to outwardly manage an incident.
We're experiencing an issue with our website and app and are working hard to get things back up and running. We apologise for any inconvenience.
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In a world dominated by digital tools, it's easy to forget that sometimes you just need to pour some oil on your daughter's iPad.
Here is a behind-the-scenes process of the loop I made for the
@linear
launch today.
I wish it were more complicated than pouring canola oil on my daughters iPad, but that was essentially it.
The attached video shows the final footage alongside the original, unaffected capture.
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Big day today, folks! What started as a little side-hustle to make incident handling a little easier, has now graduated to fully fledged product used by hundreds of companies around the world.
And to mark this we're live today on
@ProductHunt
🎉🙌✨
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