Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.

This is the legacy version of twitter.com. We will be shutting it down on June 1, 2020. Please switch to a supported browser, or disable the extension which masks your browser. You can see a list of supported browsers in our Help Center.

  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
colmmacc's profile
Colm MacCárthaigh
Colm MacCárthaigh
Colm MacCárthaigh
@colmmacc

Tweets

Colm MacCárthaigh

@colmmacc

AWS, Apache, Crypto, Irish Music, Haiku, Photography

Seattle
notesfromthesound.com
Joined April 2008

Tweets

  • © 2020 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Imprint
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. Colm MacCárthaigh‏ @colmmacc 24 Jun 2019
      • Report Tweet
      • Report NetzDG Violation

      Today at a @qconnewyork AMA, @lauralifts asked a really good question "What do you think are the biggest opportunities in observability" and I've been thinking about it since. Curious what people think. I have mine ...

      6 replies 6 retweets 30 likes
      Show this thread
    2. Colm MacCárthaigh‏ @colmmacc 24 Jun 2019
      • Report Tweet
      • Report NetzDG Violation

      A good answer is better high-level insights, aberration detection, etc. But I wonder if we could invent a single, scalar, measure of dynamism in large systems, akin to temperature in thermodynamic systems. 2/n

      1 reply 0 retweets 9 likes
      Show this thread
    3. Colm MacCárthaigh‏ @colmmacc 24 Jun 2019
      • Report Tweet
      • Report NetzDG Violation

      Imagine being able to look at a large system under stress; an overload event, or a capacity loss, and assign it a temperature. Or at an inactive, or constantly performant system, and see that it's cool. Imagine being able to see temperature increase during a deployment. 3/n

      2 replies 0 retweets 5 likes
      Show this thread
    4. Colm MacCárthaigh‏ @colmmacc 24 Jun 2019
      • Report Tweet
      • Report NetzDG Violation

      That would be so neat, because it would give people a macro signal of when to be careful and when to apply cooling. It seems like it would be crazy and heuristically, but I wonder if it could be defined statistically based on state exchanges. 4/n

      1 reply 0 retweets 8 likes
      Show this thread
      Colm MacCárthaigh‏ @colmmacc 24 Jun 2019
      • Report Tweet
      • Report NetzDG Violation

      This is, after all, how temperature is derived from molecular momentum. If such a measure could be invented, it would be a huge breakthrough. Anyway, that's my thought. 5/5

      7:42 PM - 24 Jun 2019
      • 10 Likes
      • Garrett Wilkin Mark Collier 柯理怀 Nimrod Aviram vladdy thompson Justin 👨‍💻 Lane Musgrave Greedkill$
      9 replies 0 retweets 10 likes
        1. New conversation
        2. Roy T. Fielding‏ @fielding 25 Jun 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @colmmacc

          Temperature doesn't give you a macro signal; deltas and derivatives of temperature do. A hot day in SoCal is just normal, until it isn't, as is June gloom in June but not in August. I would visualize the system and then colorize it (separately) by delta-norm and rate of change.

          2 replies 1 retweet 4 likes
        3. Roy T. Fielding‏ @fielding 25 Jun 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @fielding @colmmacc

          One example from NOAA using GIF animation loop to simulate rate of change. https://www.cpc.ncep.noaa.gov/products/analysis_monitoring/enso_update/gsstanim.shtml …pic.twitter.com/MclAuWSO83

          0 replies 2 retweets 6 likes
        4. End of conversation
        1. New conversation
        2. Paul Berg‏ @paulwberg 24 Jun 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @colmmacc

          You are engineering at a completely different scale there. I think this is already happening though. Running a service fleet accepting a billion+ calls a day over 250 boxes we debug patterns that are not visible at the process level. This is akin to observing temp.

          1 reply 0 retweets 0 likes
        3. Paul Berg‏ @paulwberg 24 Jun 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @paulwberg @colmmacc

          I detected the 2011 Japanese earthquake immediately long before any news. Not from any system failure but because online behavior patterns changed instantly at first shake and sent alarms screaming through macro observation. A whole country ceased clicking their mice at once.

          1 reply 0 retweets 1 like
        4. 2 more replies
        1. New conversation
        2. adrian cockcroft‏ @adrianco 25 Jun 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @colmmacc

          And we could call it a “mood” and ask the system if its happy or sad. I wrote something on this that I need to post.... Our own human observability system is our emotions and our query and alerting system is called consciousness.

          1 reply 0 retweets 1 like
        3. Michael Hausenblas‏ @mhausenblas 25 Jun 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @adrianco @colmmacc

          Reminds me of what Netflix reported in the context of Flux, the 'pain suit', letting you feel your infra. Time for some AR app, maybe?

          0 replies 0 retweets 0 likes
        4. End of conversation
        1. (((Kylo Ginsberg)))‏ @kylog 24 Jun 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @colmmacc

          A single scalar measurement is beyond my ken, but I could imagine something that was the max of several essential "temps" (latency, 5xx, network b/w, ...), and then it would be dreamy if I could click into that to see a system diagram showing me what edges were hot in what ways.

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. Laura Nolan‏ @lauralifts 25 Jun 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @colmmacc

          Is a combination of saturation and errors the answer here, perhaps?

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. Ben Laurie‏Verified account @BenLaurie 25 Jun 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @colmmacc

          A thought for you. I'm not that kind of mathematician, but apparently temperature is not mathematically well defined, so don't obsess too much about correctness.

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. thompson‏ @jmichaethompson 25 Jun 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @colmmacc

          have you thought much about how to define the states for the components of your system?

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2020 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Imprint
        • Cookies
        • Ads info