Ivan Sedlak

这是我在Toptal上做的第一个项目. 我的工作是创建一个后端库，使安全模型标准化. I designed and implemented the code that supports multiple identity providers using OWIN middleware.

一些支持的提供商是Azure AD、自定义SAML idp、ASP.. NET身份登录，以及Facebook. I also designed and implemented a custom change-aware lazy-load caching solution, application, 以及低级数据库审计解决方案, various helpers, and base classes.

The library set a standard for other developers to follow and make their job easier as they could just use the exposed methods and properties, which made their code a lot easier to develop and maintain with one-line solutions to get current user properties, set claims, authenticate, access cached data, register a new user, 授权用户访问资源, etc.

I had a great time working on this project as I enjoy designing the back-end libraries and standards to make developers' lives a bit easier and solutions more maintainable and secure.

My initial job was to get familiar with the solution and specific database conventions.

在那之后，我开始与CSLA合作.NET to create business objects that are used for ORM and making Web APIs to expose that data to specific set of security roles.

I also helped developers working on front-end to utilize exposed data using AJAX calls.

Most complex thing I worked on was the advanced scheduler that takes a lot of different things into consideration to determine available places and times and based on selected algorithm makes the scheduling, 创建游戏和分配团队. This was done in pure T-SQL to keep it as close to database as possible to avoid doing a lot of plumbing to get and write the data in CSLA.. NET框架(避免创建大量业务对象). Scheduling works fast and has validations and data corruption prevention built in, 甚至是只读模式(事务不持久化).

我和客户相处得很愉快. The work was well organized, using JIRA and daily Scrum and story grooming meetings. This was the biggest solution I've worked on and also the most complex T-SQL code I've written so far.

I implemented synchronous (sync) and asynchronous (async) actions using web callbacks and HTTP(s) Web API using Azure Functions and Azure Durable Functions. The API is composed out of Function Apps which contain one or more HTTP request handlers.

授权和路由使用APIM(类固醇反向代理)处理。. 数据保存在SQL和NoSQL数据存储中，具体取决于用例. 快速扩展能力, good solution design, and overall system stability handled all the spikes in live traffic without increasing the failure rate.