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Inspirational Words of Wisdom.

Let these balance quotes encourage and inspire you to keep a balance in your life. It is essential to maintaining quality in life and work. As you can see, the act of balancing consists of several things. Some of these things may be small but at the same time necessary to put the act together. A lot of people find it hard to balance work. The term itself diminishes our ability to make the case that work can be a richly rewarding part of a person's life and should in many ways be personal.

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But living a life in balance can provide harmony and peace. Doing one thing too much can cause upset, like the old saying goes, everything in moderation is the secret! Being out of balance means that your true self will start to be confused with what you pretend to be.

Most of us are doing the best we can to find whatever the right balance is. For me, that balance is family, work, and service. If you are trying to balance a family and a career, the choices are complex because both are important.

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It's been a bit of a rocky road, but without those challenging times, I wouldn't have been able to learn from it and improve. Part of this balance means not missing out on some of the marvels of life around you, the fun, some excitement, or other challenges in life. Nervous systems can be brought. A life you don't need a vacation from. When it comes to balance, you have been sold a bill of goods. One of the first mistakes I made was to launch a new instance and have scripts bash, puppet, or chef do the software configuration whenever a new instance launched.

Needless to say, it was very slow to scale and extremely error prone.

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It is often difficult to find the right balance between what is baked into an AMI and what is done at scaling time. In my opinion, this should be the goal because the less you have to do at startup time, the faster your scaling will be.

In addition to being faster at scaling, the more scripts and configurations you run at startup time, the greater the chance that something will go wrong. Finally, what became the holy grail of the Golden AMI was to get rid of the configuration scripts and replace them with Dockerfiles instead. Today, scaling with container platforms like ECS or Lambda functions is even faster, and should be reflected in any architectural design.

Large scale systems often have a combination of all these technologies. One benefit of using infrastructure as code is repeatability. Consider for a moment the amount of work that would be required if you had to do that manually, for multiple environments in each of these regions. First it would be a tedious task, but it would most likely introduce configuration differences and drifts over time. Give the same template to a computer and it will execute that template 10, times exactly the same way. Now, imagine your environment being compromised, suffering an outage, or even being deleted by mistake yes, I saw that happen once. You have data backup. You have the infrastructure templates. Doing that manually, and at scale, will result in a nightmare scenario, with a lot of sweat and tears — and worse: unhappy customers. Another benefit of infrastructure as code is knowledge sharing. Indeed, if you version control your infrastructure, you can treat code the same way you treat application code.

You can have teams committing code to it, and ask for improvements or changes in configuration. If that process goes through a pull-request, then the rest of the team can verify, challenge, and comment on that request — promoting better practices. The principle of immutable infrastructure is fairly simple: Immutable components are replaced for every deployment , rather than being updated in place. This deployment strategy supports the principle of Golden AMI and is based on the Immutable Server pattern which I love since it reduces configuration drift and ensures deployments are repeatable anywhere from source.

A typical immutable infrastructure update goes as follows:. To support application deployment in an immutable infrastructure, you should preferably use canary deployment, which is a technique used to reduce the risk of failure when new versions of applications enter production, by gradually rolling out the change to a small subset of users and then slowly rolling it out to the entire infrastructure and making it available to everybody.

According to Kat Eschner , the origin of the name canary deployment comes from an old British mining tradition where miners used canaries to detect carbon monoxide and toxic gases in coal mines. To make sure mines were safe to enter, miners would send canaries in first, and if the canary died or got ill, the mine was evacuated.

The benefit of canary deployment is, of course, the near immediate rollback it gives you — but more importantly, you get fast and safer deployments with real production test data! There are few considerations to keep in mind during canary deployment:. The approach of reusing the load-balancer helps avoid any DNS record set changes in Route It goes as follows:.

For your serverless applications, you also have the option of using Amazon API Gateway since it now supports canary release deployments or you can implement canary deployments of AWS Lambda functions with alias traffic shifting. Following is an example that points an alias to two different Lambda function versions by configuring an alias to shift traffic between two function versions based on weights. In a stateless service, the application must treat all client requests independently of prior requests or sessions, and should never store any information on local disks or memory.

Sharing state with any resources within the auto scaling group should be conducted using in-memory object caching systems such as Memcached , Redis , EVCache , or distributed databases like Cassandra or DynamoDB , depending on the structure of your object and requirements in terms of performances. So, my last advice for that post is: Automate! I hope you have enjoyed this part 1. Please do not hesitate to give feedback, share your own opinion or simply clap your hands.

In the next part, I will go on and discuss more on the patterns to avoid cascading failures. Stay tuned!

Justifying Taking The Time For Rest

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