1602774000
8 Fallacies of Continuous Delivery
A quintessential piece for anyone working with distributed systems is the Fallacies of Distributed Computing by L Peter Deutsch. Even when working with modern platforms such as Kubernetes, the assertions made in the Fallacies of Distributed Computing prove to be very true around latency, bandwidth and system administration.
Continuous Delivery practices and systems are increasing in popularity. When designing, implementing or maintaining Continuous Delivery systems, fallacies do exist. Similar to the eight Fallacies of Distributed Computing, there are eight Fallacies of Continuous Delivery.
1. You Will Always Deploy Successfully
A common pitfall in any system development is to build for the happy path. Because software requires innovation and iteration, deployments will fail, and a failure and recovery path needs to be accounted for.
In lower environments, confidence-building steps such as automated tests will have a higher failure / not-passing rate, as confidence is built into the deployment and feedback loops allow for corrections to eventually pass the test coverage.
2. Your Administrators Will Stay
People never stay in the same position forever. Deep expertise in bespoke deployments is at risk with those with tribal knowledge off-board. This also causes a steeper learning curve for those who onboard as platform administrators or onboard their application to the Continuous Delivery system.
**3. Deployments are Always Homogeneous **
A deployment is a culmination of potentially multiple teams and their respective services. There are several approaches to deployment, but because of variations in the scope of changes, rarely are two changes exactly the same. Certain deployments require downtime, while others may require a rolling or canary release strategy.
**4. Rollback Cost is Zero **
The time to decide or make a judgment call to rollback or roll forward certainly carries a cost. Depending on the criticality of the impacted system(s), the clock is ticking, battling the technical point of no return and impact to the business. Once a rollback or roll forward decision is made and executed, validation still needs to occur.
#continuous-integration #continuous-delivery #continuous-deployment #kubernetes #app-development #distributed-computing #devops #hackernoon-top-story
What is GEEK
Buddha Community
1602774000
8 Fallacies of Continuous Delivery
A quintessential piece for anyone working with distributed systems is the Fallacies of Distributed Computing by L Peter Deutsch. Even when working with modern platforms such as Kubernetes, the assertions made in the Fallacies of Distributed Computing prove to be very true around latency, bandwidth and system administration.
Continuous Delivery practices and systems are increasing in popularity. When designing, implementing or maintaining Continuous Delivery systems, fallacies do exist. Similar to the eight Fallacies of Distributed Computing, there are eight Fallacies of Continuous Delivery.
1. You Will Always Deploy Successfully
A common pitfall in any system development is to build for the happy path. Because software requires innovation and iteration, deployments will fail, and a failure and recovery path needs to be accounted for.
In lower environments, confidence-building steps such as automated tests will have a higher failure / not-passing rate, as confidence is built into the deployment and feedback loops allow for corrections to eventually pass the test coverage.
2. Your Administrators Will Stay
People never stay in the same position forever. Deep expertise in bespoke deployments is at risk with those with tribal knowledge off-board. This also causes a steeper learning curve for those who onboard as platform administrators or onboard their application to the Continuous Delivery system.
**3. Deployments are Always Homogeneous **
A deployment is a culmination of potentially multiple teams and their respective services. There are several approaches to deployment, but because of variations in the scope of changes, rarely are two changes exactly the same. Certain deployments require downtime, while others may require a rolling or canary release strategy.
**4. Rollback Cost is Zero **
The time to decide or make a judgment call to rollback or roll forward certainly carries a cost. Depending on the criticality of the impacted system(s), the clock is ticking, battling the technical point of no return and impact to the business. Once a rollback or roll forward decision is made and executed, validation still needs to occur.
#continuous-integration #continuous-delivery #continuous-deployment #kubernetes #app-development #distributed-computing #devops #hackernoon-top-story
1617089618
Laravel 8 Tutorial for Beginners
Hello everyone! I just updated this tutorial for Laravel 8. In this tutorial, we’ll go through the basics of the Laravel framework by building a simple blogging system. Note that this tutorial is only for beginners who are interested in web development but don’t know where to start. Check it out if you are interested: Laravel Tutorial For Beginners
Laravel is a very powerful framework that follows the MVC structure. It is designed for web developers who need a simple, elegant yet powerful toolkit to build a fully-featured website.
#laravel 8 tutorial #laravel 8 tutorial crud #laravel 8 tutorial point #laravel 8 auth tutorial #laravel 8 project example #laravel 8 tutorial for beginners
1599536794
Laravel 8 New Features | Release Notes - Tuts Make
In this post, i will show you what’s new in laravel 8 version.
#What’s new in Laravel 8?
- 1 - Change Path Of Default Models Directory
- 2 - Removed Controllers Namespace Prefix
- 3 - Enhancements on php artisan serve
- 4 - Enhanced Rate Limiting
- 5 - Enhanced on Route Caching
- 6 - Update on Pagination Design
- 8 - Dynamic Blade Componenets
- 7 - Update Syntax for Closure Based Event Listeners
- 8 - Queueable Model Event Listeners
- 9 - Maintenance mode: secret access
- 10 - Maintenance mode: pre-rendered page
- 11 - Queued job batching
- 12 - Queue backoff()
- 13 - Laravel Factory
https://www.tutsmake.com/laravel-8-new-features-release-notes/
#laravel 8 features #laravel 8 release date #laravel 8 tutorial #news - laravel 8 new features #what's new in laravel 8 #laravel 8 release notes
1645610460
Nitpick: Enforce The Same Settings on Multiple Projects
Nitpick
Command-line tool and flake8 plugin to enforce the same settings across multiple language-independent projects.
Useful if you maintain multiple projects and are tired of copying/pasting the same INI/TOML/YAML/JSON keys and values over and over, in all of them.
The CLI now has a nitpick fix command that modifies configuration files directly (pretty much like black and isort do with Python files). See the CLI docs for more info.
Many more features are planned for the future, check the roadmap.
The style file
A "Nitpick code style" is a TOML file with the settings that should be present in config files from other tools.
Example of a style:
["pyproject.toml".tool.black]
line-length = 120
["pyproject.toml".tool.poetry.dev-dependencies]
pylint = "*"
["setup.cfg".flake8]
ignore = "D107,D202,D203,D401"
max-line-length = 120
inline-quotes = "double"
["setup.cfg".isort]
line_length = 120
multi_line_output = 3
include_trailing_comma = true
force_grid_wrap = 0
combine_as_imports = trueThis style will assert that:
- ... black, isort and flake8 have a line length of 120;
- ... flake8 and isort are configured as above in
setup.cfg; - ... Pylint is present as a Poetry dev dependency in
pyproject.toml.
Supported file types
These are the file types currently handled by Nitpick.
- Some files are only being checked and have to be modified manually;
- Some files can already be fixed automatically (with the
nitpick fixcommand); - Others are still under construction; the ticket numbers are shown in the table (upvote the ticket with 👍🏻 if you would like to prioritise development).
Implemented
| File type | nitpick check | nitpick fix |
|---|---|---|
| Any INI file | ✅ | ✅ |
| Any JSON file | ✅ | ✅ |
| Any plain text file | ✅ | ❌ |
| Any TOML file | ✅ | ✅ |
| Any YAML file | ✅ | ✅ |
| .editorconfig | ✅ | ✅ |
| .pylintrc | ✅ | ✅ |
| setup.cfg | ✅ | ✅ |
Planned
| File type | nitpick check | nitpick fix |
|---|---|---|
| Any Markdown file | #280 🚧 | ❓ |
| Any Terraform file | #318 🚧 | ❓ |
| Dockerfile | #272 🚧 | #272 🚧 |
| .dockerignore | #8 🚧 | #8 🚧 |
| .gitignore | #8 🚧 | #8 🚧 |
| Jenkinsfile | #278 🚧 | ❓ |
| Makefile | #277 🚧 | ❓ |
Style Library (Presets)
Nitpick has a builtin library of style presets, shipped as Python resources.
This library contains building blocks for your your custom style. Just choose styles from the table below and create your own style, like LEGO.
Read how to:
any
javascript
| Style URL | Description |
|---|---|
| py://nitpick/resources/javascript/package-json | package.json |
kotlin
| Style URL | Description |
|---|---|
| py://nitpick/resources/kotlin/ktlint | ktlint |
presets
| Style URL | Description |
|---|---|
| py://nitpick/resources/presets/nitpick | Default style file for Nitpick |
proto
| Style URL | Description |
|---|---|
| py://nitpick/resources/proto/protolint | protolint (Protobuf linter) |
python
shell
Quickstart
Install
Install in an isolated global environment with pipx:
# Latest PyPI release
pipx install nitpick
# Development branch from GitHub
pipx install git+https://github.com/andreoliwa/nitpick
On macOS/Linux, install with Homebrew:
# Latest PyPI release
brew install andreoliwa/formulae/nitpick
# Development branch from GitHub
brew install andreoliwa/formulae/nitpick --HEAD
On Arch Linux, install with yay:
yay -Syu nitpick
Add to your project with Poetry:
poetry add --dev nitpick
Or install it with pip:
pip install -U nitpick
Run
To fix and modify your files directly:
nitpick fix
To check for errors only:
nitpick check
Nitpick is also a flake8 plugin, so you can run this on a project with at least one Python (.py) file:
flake8 .
Nitpick will download and use the opinionated default style file.
You can use it as a template to configure your own style.
Run as a pre-commit hook
If you use pre-commit on your project, add this to the .pre-commit-config.yaml in your repository:
repos:
- repo: https://github.com/andreoliwa/nitpick
rev: v0.31.0
hooks:
- id: nitpick
There are 3 available hook IDs:
nitpickandnitpick-fixboth run thenitpick fixcommand;nitpick-checkrunsnitpick check.
If you want to run Nitpick as a flake8 plugin instead:
repos:
- repo: https://github.com/PyCQA/flake8
rev: 4.0.1
hooks:
- id: flake8
additional_dependencies: [nitpick]
More information
Nitpick is being used by projects such as:
- wemake-services/wemake-python-styleguide
- dry-python/returns
- sobolevn/django-split-settings
- catalyst-team/catalyst
- alan-turing-institute/AutSPACEs
- pytest-dev/pytest-mimesis
For more details on styles and which configuration files are currently supported, see the full documentation.
Contributing
Your help is very much appreciated.
There are many possibilities for new features in this project, and not enough time or hands to work on them.
If you want to contribute with the project, set up your development environment following the steps on the contribution guidelines and send your pull request.
Author: Andreoliwa
Source Code: https://github.com/andreoliwa/nitpick
License: MIT License
1622005584
How to Develop On-Demand Pizza Delivery App?
AppClues Infotech is a mobile app development company providing high-end online and offline custom mobile app solutions to startups, small and medium businesses (SMBs) as well as large Fortune Global enterprises, spread across India, USA and UK.
Depending on the features the price of the application varies to develop On-demand Pizza Delivery App it may cost you around-$7000 to $20000.
Features Of AppClues App develpoment
- Request Management
- Look Menu for Food
- Cook Allocation
- Allotting Delivery to Delivery Men
- Conveyance Tracking for Food Order
- Surveys and Feedback for Order Delivered
- Referral Management (Friend)
- Continuous Communication (For Order Confirmation)
- Limited time Offers (Promo Codes)
Over the past years, AppClues Infotech has been able to successfully deliver and deploy many enterprise and consumer mobile apps for its clients.The applications developed by AppClues Infotech under mobility solutions have been spread across various platforms and development.
Our top-notch engineers craft flawless code for the system with the largest number of users in the world.
Why Choose us ?
- Aligned structure
- Domain Expertise
- On time Delivery
- 24/7 Support
- Detailed analysis
- Aesthetic Designs
- Agile Development
- Rigorous Testing
- Smooth Handover
AppClues Infotech Builds software that makes businesses more efficient and customers’ lives easier is what we’re bet at. Products we create are carefully designed with end users in mind and brought to life with elegantly written code.
#pizza delivery app development #on-demand pizza delivery app development #pizza delivery app development for android & iphone #pizza delivery app development company #food delivery app development #how to build a food delivery app