Backend и Highload программирование на PHP (Laravel) и Go Lang, с использованием MySQL и Redis, внутри Docker контейнеров.

Here’s the situation, you’re building an online store that should handle thousands of orders every day, one of the cool things about this store is that customers who make purchases above 10K should receive a gift coupon, let’s see how we can implement such thing in laravel: On every new purchase a NewPurchase event is dispatched, we can easily setup as much listeners as we want to this event from within our EventServiceProvider: class EventServiceProvider Read more

Continuous Integration and Deployment with Codeship Continuous integration (CI) is one of those topics that might sound scary and complicated, and of course there are a gazillion aspects of it that could occupy you for years, but getting started doesn’t have to be a major undertaking. The idea of CI is very coupled to using a code repository (usually git) as well as the idea that testing and building on every committed change and releasing Read more

We all know that a good test suite — unit and integration — is important to any application. We also know that running all our tests can take some time (especially in large projects). What one may not know is that is possible to reduce this time up to 85% (or even more). In this post, I will show how we did this. Results may vary, but certainly you will notice a great improvement. The Read more

services such as the order management service, the customer management service, etc. Services communicate using either synchronous protocols such as HTTP/REST or asynchronous protocols such as AMQP (Advanced Message Queuing Protocol). Services can be developed and deployed independently of one another. Each service has its database to be decoupled from other services. Data consistency between services is maintained using the Saga pattern. As the services are very granular, client applications usually need to interact with Read more

Существует 3 типа split-brain 1.Data-spli-brain – информация в файлах отличается на разных кирипичиках реплики(т.е. разное содержимое файлов, находящихся в каталоге /gluster-storage на нодах) 2.Metadata-split-brain – аналогично,но не информация/содержимое отличается, а метаданные(группа,владелец,права,атрибуты) 3.Entry/gfid-split-brain – GlusterFS-иденитификаторы(GFID) различаются для одного и того же файла на разных кирпичиках одной реплики Entry/gfid — этот тип split-brain НЕ МОЖЕТ бать исправлен с помощью автоматического heal Проcмотр всех файлов,которые требуют healing ( и будут обработаны демоном self-heal) # gluster volume heal gvolume1 Read more

I’ve been studying docker-swarms lately and wanted to write a cheatsheet of setup and commands to maintain a swarm both for my reference and yours. These commands are for docker version: 17.03.0-ce as of August 2017. Install docker with curl -ssl https://get.docker.com | bash Preparing the server Create several instances of the one-click docker image on Ubuntu 14. Initialize the swarm Log into the server you want to be your manager and run: docker swarm Read more

PHP-FPM — это разновидность SAPI для PHP. Чтобы понять, что это такое, стоит рассказать о понятии SAPI. FPM SAPI, он же Server API. В php есть несколько таких API для разных вариантов его работы: CLI SAPI — в качестве консольной команды `php` для запуска наших кронов и других cli-программ (Command Line Interface) apxs2 SAPI — в качестве модуля к apache2 CGI SAPI — в качестве запускаемого на каждом запросе CGI (сейчас так почти никто не Read more

You probably know that in Ubuntu/Debian, you should not run as the root user, but should use the sudo command instead to run commands that require root privileges. However, it can also be inconvenient to have to enter your password every time that you use sudo. Here’s a quick fix that removes the requirement to enter you password for sudo. Open the /etc/sudoers file (as root, of course!) by running: 1 sudo visudo You should Read more

A recent Docker update came with a small but important change for service secrets and configs, that enables a much easier way to manage and update them when deploying Swarm stacks. TL;DR This post describes an automated way to create and update secrets or configs, when they are managed through a Composefile, and are deployed as a stack, along with the services using them. To avoid repeating “secrets and configs” all over the post, I’m Read more

# docker run hello-worldUnable to find image 'hello-world:latest' locallylatest: Pulling from library/hello-world1b930d010525: Pull completeDigest: sha256:92695bc579f31df7a63da6922075d0666e565ceccad16b59c3374d2cf4e8e50eStatus: Downloaded newer image for hello-world:latestHello from Docker!This message shows that your installation appears to be working correctly. 2. Initialize Docker swarm from the swarm-manager We’ll use the swarm-manager’s private IP as the “advertised address”. swarm-manager:~# docker swarm init --advertise-addr 192.168.2.99Swarm initialized: current node (sz42o1yjz08t3x98aj82z33pe) is now a manager.To add a worker to this swarm, run the following command:docker swarm join Read more