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gokhanertogan/README.md

Gökhan Ertoğan

Typing intro

LinkedIn NuGet Istanbul Profile views

👨‍💻 About me

  • 🧭 Software Development Team Lead, leading a team that owns business-critical microservices
  • 🏗️ 10+ years of .NET across e-commerce, travel, ERP and a FIFA World Cup 2022 platform
  • 🔀 I like the parts that break quietly: concurrency, background work, messaging and their observability
  • 📡 Author of RunSignal, cross-language observability for background jobs, with SDKs in .NET, Go, Java, Node.js and Rust
  • 🎓 M.Sc. student in Artificial Intelligence, B.Sc. student in Business Administration
  • 🤝 Mentoring, code reviews and clean, boring, reliable systems

🚀 Open source

📡 RunSignal

Cross-language workload observability and alert provisioning. Your APM alerts on HTTP 500s; RunSignal covers the work with no HTTP request: the nightly job that never started, the consumer that stopped processing, the import that "succeeded" with 0 rows. It records runs, items and heartbeats as OpenTelemetry metrics with the same names in every language, and provisions missed, failed, overrun, stalled and low-output alerts in New Relic or Prometheus from a declarative manifest.

NuGet Go Maven Central npm crates.io Integrations Backends

⚡ StructuredConcurrency

Structured concurrency for .NET. Child tasks run inside a scope that completes only when all of them have finished, and the first failure cancels the rest.

NuGet version NuGet downloads

🧅 onion_template

dotnet new template that generates a production-ready .NET 10 microservice with zero third-party packages: mediator, validation, result pattern, outbox and permission-based auth built in.

NuGet version .NET 10

🔬 dotnet/runtime: performance work on System.Xml.XPath

#136245 Make following-sibling / preceding-sibling axes linear instead of quadratic
#136180 Remove allocations in translate() and normalize-space()

🧩 Architecture samples

Repo What it shows
🧱 ModulerMonolith .NET 10 modular monolith: Products, Baskets and Orders modules with their own schemas, outbox-based integration events and architecture tests
🎼 SagaOrchestration Orchestrated saga with a MassTransit state machine over RabbitMQ
💃 DistributedTransactionSagaChoreography Choreographed saga with the transactional outbox pattern
🤝 TwoPhaseCommitPattern Two-phase commit with a coordinator across Order, Payment and Stock services
📜 EventSourcingProject Event-sourced basket on Marten and PostgreSQL: optimistic concurrency, inline and async projections, time travel
🛡️ ResilientPatterns Polly v8 resilience pipelines against a flaky service: retry with jitter, circuit breaker, timeouts, hedging, fallback, rate limiting
🛒 ShoppingCartProject Clean Architecture cart service with an append-only event log, transactional outbox and RabbitMQ integration events
🗂️ DataPartitioningProject PostgreSQL range partitioning vs. jsonb + GIN index for campaign lookups, load-tested with NBomber

🛠️ Tech stack

Languages
Data and observability
Messaging and DevOps
Version control

🧠 Backend C# .NET ASP.NET Core ASP.NET MVC / Web API REST SOAP LINQ SignalR WCF
🗄️ Data SQL Server PostgreSQL MongoDB Redis Elasticsearch EF Core Dapper
🔀 Architecture & messaging Microservices Event-driven DDD CQRS Event Sourcing Kafka RabbitMQ MassTransit MediatR Hangfire
📡 Observability OpenTelemetry New Relic Prometheus Grafana Serilog
🌐 Polyglot (RunSignal SDKs) Go Java Spring Boot Node.js TypeScript Rust
🤖 AI / ML Python PyTorch Hugging Face Transformers SHAP
🧪 Testing & quality xUnit NUnit Moq Testcontainers BenchmarkDotNet TDD Integration testing SonarQube SOLID Clean Code
☁️ Cloud & DevOps Docker Kubernetes Azure CI/CD GitLab CI GitHub Actions
🌿 Version control Git GitHub GitLab Bitbucket TFS
🖥️ Desktop WinForms DevExpress
🏃 Process Scrum Kanban

🎓 Education

  • 🤖 M.Sc. Artificial Intelligence · Ahmet Yesevi University (in progress)
  • 💻 M.Sc. Software Engineering · Ahmet Yesevi University
  • 📈 B.Sc. Business Administration · Anadolu University (in progress)
  • 🗄️ B.Sc. Management Information Systems · Anadolu University
  • 🧑‍🏫 B.Ed. Computer Education and Instructional Technology · İbrahim Çeçen University

📊 GitHub activity

GitHub streak

Contribution snake

Pinned Loading

  1. LamilaDinner LamilaDinner Public archive

    Dinner-hosting REST API in .NET 7: Clean Architecture, DDD aggregates and CQRS with MediatR, ErrorOr, FluentValidation and EF Core

    C#

  2. ModulerMonolith ModulerMonolith Public

    Modular monolith in .NET 10: Products, Baskets and Orders modules with own schemas, contracts-only communication, outbox and architecture tests

    C#

  3. onion_template onion_template Public

    dotnet new template for a production-ready .NET 10 microservice with zero third-party packages

    C#

  4. StructuredConcurrency StructuredConcurrency Public

    Structured concurrency for C# and .NET: TaskGroup, Promise.all / Promise.any / allSettled, timeouts that cancel the work, Go's select and singleflight, supervisors and hedged requests. The first fa…

    C#

  5. dotnet/runtime dotnet/runtime Public

    .NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

    C# 18.4k 5.7k

  6. RunSignal RunSignal Public

    Cross-language workload observability and alert provisioning: alert on background jobs, consumers and batches that no HTTP status code describes. .NET, Go, Java, Node.js, Rust; New Relic and Promet…

    C#