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November 23, 2020

Ten Commandments of Egoless Programming

We are nothing but the values we carry. All through my life thus far, I tried to influence people around me with the virtues I value. Thanks to some good reading habits I had inculcated, and the fortune of being in good community of peers and mentors alike, I managed to have read some real good books. This post is about the 10 commands of egoless programming in Weinberg's book. I shall explain the commandments based on my experience here.

So very many decades ago, Gerald M. Weinberg authored The Psychology of Computer Programming. In it, he listed The Ten Commandments of Egoless Programming, which remains relevant even today for us as not just programmers but as team-members.

Weinberg is regarded as a pioneer in taking a people-centric approach to computing, and his work endures as a good guide to intelligence, skill, teamwork, and problem-solving power of a developer. When they appear to inspire and instruct, we find that they can apply to just about every business area, and even to life itself.

Here are the 10 important lessons developers, project managers, and stakeholders would do well to keep in mind during the project lifecycle.

  1. Understand and accept that you will make mistakes.
    Mistakes are rarely fatal in our industry, so find them early, before they make it into production, learn from them, and move on.

  2. You are not your code.
    The point of a review is to find problems. Don't take it personally when one is found. Remember my words, “To err is only human, repeating it is what makes you either evil or insane”.

  3. No matter how much "karate" you know, someone else will always know more.
    Seek and accept input from others. You can learn new techniques if you just ask. Always remember, it is never too late to learn.

  4. Don't rewrite code without consultation.
    It is always a good idea to pair-up and have conversations on the code that you are tempted to re-write because you think it is bad. Your risks are much lesser if the code is backed by Unit tests. The least you can do is get it code reviewed before pushing code to main-stream branch.

  5. Treat people who know less than you with respect and patience.
    Don’t be a bully. Seriously, just don’t be one. Grow up!

  6. The only constant in the world is change.
    Things change, sometime for better and sometimes for worse. There are some things in your control which you can leverage to change things for better. Be the change that you wish for good. Also be willing to accept change for the overall good of the team.

  7. The only true authority stems from knowledge, not from position.
    Don't wield a title like a badge of "rightness." If you want to be loved and respected in an egoless environment, cultivate knowledge. It may or may not lead to authority, but sure leads to love and respect from others.

  8. Fight for what you believe, but gracefully accept defeat.
    Open culture is not being polite in the front and back-bitching in the back. Rise up, voice your concerns, be heard, and make your point of view by doing your homework, all with an intent to help and learn otherwise. You can’t accept defeat, if you carry the burden of your ego.

  9. Don't be "the guy in the room".
    There are so many beer buddies, movie mates, cigarette companions, and what not, who can come together or fight fiercely on any non-professional topics by respecting each other; but definitely not discuss and debate openly, work related matters for team’s betterment. Just don’t be that guy in the room.

  10. Critique code instead of people – be kind to the coder, not to the code.
    Pour your frustration on lifeless things instead of on emotional beings. Corollary, if someone were to show his frustrations on you instead of your work, be a little polite to him, discounting it as emotional down syndrome. I have been on both sides, and so will you sometime. Let us support one another and grow together.

Just to re-iterate, these commandments are still incredibly relevant. Put it to deliberate practice and with time they will bring out a better developer and co-worker in you.

You can get this book from Amazon.

November 20, 2020

Tensegrity In Microservices Architecture

Tensegrity or Tensional Integrity is also known in layman words as Floating Compression. In engineering field, it is the science of building a structure of isolated "compressed components" like bars that connected by "pre-stressed tensioned loose components" like cables or tendons. Any disturbance to a component in the assembly not just alters but brings down the entire structure.

Below is a picture of one such engineering model. Take a deep breadth and try to identify the connectors that help maintain the beautiful engineering model that you are witnessing.

Think of a table engineered by applying Tensegrity principles, like the one above. You may love looking at those crafty products but when it comes to buying it for your daily use, you think of  durability, don't you?

Tensegrity in software product/services is taboo, for it is not a deliberate engineering but a result of neglect or poor engineering. It's manifestation crops up so often in today's buzz-word architecture -- microservices. Every company dreams of building and connecting together a loose set of services as one application overlooking the cons in distributed architecture. Some of the examples of its manifestation are:

  • Consumer service go down when its Producer service is unreachable.

  • Consumer service go down when its Producer service is times out.

  • Consumer service go down when its Producer service returns unexpected response.

I have voiced openly against startups going micro-services first architecture during my consulting days. I still warn them. I am a big advocate for monolith first and then tearing it down into microservices, after you got your domain modelling right and have well defined bounded context. And when you do break it down into microservices, it gives you enough leeway to accommodate your learnings from your short-comings in building distributed architectures. Tensegrity is the very basic thing, that you should watch out for and solve in your engineering microservices architecture by not re-inventing the wheel but by making use of available libraries that resolve these kind of issues.

Remember this as you refactor your monolithic architecture to microservices one,

Moving from monolithic architecture to microservices architecture is shifting complexity from your application to orchestration. Know your strengths and find your balance.