Introducing a new Eventarc destination - internal HTTP endpoint in a VPC network

Introduction Eventarc helps users build event-driven architectures without having to implement, customize, or maintain the underlying infrastructure. Eventarc has added support (in public preview) for delivering events to internal HTTP endpoints in a Virtual Private Cloud (VPC) network. Customers, especially large enterprises, often run compute (typically GKE or GCE) on VPC-private IPs, often behind internal load balancers. This launch will enable these services to consume Eventarc events. Internal HTTP endpoints can be an internal IP address or fully qualified DNS name (FQDN) for any HTTP endpoint in the VPC network. Read More →

What languages are supported in WebAssembly outside the browser?

What languages are supported in WebAssembly running outside the browser? This is a question I often hear people ask. It’s has a complicated answer because: WebAssembly outside the browser needs WASI and not all languages have WASI support in their toolchain. Even if WASI is supported well in a language, WASI has its own limitations that you need to take into account. In short, you can’t take any code written in any language and expect to compile and run it as a Wasm+Wasi module right now. Read More →

Adding HTTP around Wasm with Wagi

In my previous posts, I talked about how you can run WebAssembly (Wasm) outside the browser with Wasi and run it in a Docker container with runwasi. The Wasi specification allows Wasm modules access to things like the filesystem and environment variables (and I showed how in this blog post) but networking and threading are not implemented yet. This is severely limiting if you want to run HTTP based microservices on Wasm for example. Read More →

Buffer workflow executions with a Cloud Tasks queue

Introduction In my previous post, I talked about how you can use a parent workflow to execute child workflows in parallel for faster overall processing time and easier detection of errors. Another useful pattern is to use a Cloud Tasks queue to create Workflows executions and that’s the topic of this post. When your application experiences a sudden surge of traffic, it’s natural to want to handle the increased load by creating a high number of concurrent workflow executions. Read More →

Workflows executing other parallel workflows: A practical guide

Introduction There are numerous scenarios where you might want to execute tasks in parallel. One common use case involves dividing data into batches, processing each batch in parallel, and combining the results in the end. This approach not only enhances the speed of the overall processing but it also allows for easier error detection in smaller tasks. On the other hand, setting up parallel tasks, monitoring them, handling errors in each task, and combining the results in the end is not trivial. Read More →

Running Wasm in a container

Docker recently announced experimental support for running Wasm modules (see Announcing Docker+Wasm Technical Preview 2). In this blog post, I explain what this means and how to run a Wasm module in Docker. Why run Wasm in a container? In my Exploring WebAssembly outside the browser post, I mentioned how Wasm is faster, smaller, more secure, and more portable than a container. You might be wondering: Why take something faster, smaller, more secure, and more portable and run it in a container? Read More →

Compile Rust & Go to a Wasm+Wasi module and run in a Wasm runtime

In my Exploring WebAssembly outside the browser post, I talked about how WebAssembly System Interface (WASI) enables Wasm modules to run outside the browser and interact with the host in a limited set of use cases that Wasi supports (see Wasi proposals). In this blog post, let’s look into details of how to compile code to a Wasm+Wasi module and then run it in a Wasm runtime. Notice that I use Wasm+Wasi module deliberately (instead of just Wasm) because some languages have Wasm support and can run perfectly fine in the browser but they have no or limited Wasi support to run outside the browser. Read More →

New Batch connector for Workflows

Workflows just released a new connector for Batch that greatly simplifies how to create and run Batch jobs from Workflows. Let’s take a look how you can use the new Batch connector of Workflows. Recap: Batch and Workflows Batch is a fully managed service to schedule, queue, and execute batch jobs on Google’s infrastructure. These batch jobs run on Compute Engine VM instances but they are managed by Batch service, so you don’t have to provision and manage VM instances yourself. Read More →

Google Cloud Pub/Sub + AsyncAPI

I’ve been covering different aspects of AsyncAPI in my recent blog posts. In this final post of my AsyncAPI blog post series, I want to talk about how to document Google Cloud’s Pub/Sub using AsyncAPI. AsyncAPI has pretty good support for Google Pub/Sub, thanks to contributions from Jeremy Whitlock, an engineer from Google, and the flexibility baked in AsyncAPI spec. Jeremy also has a nice blog post on this topic that you can read for more details. Read More →

CloudEvents + AsyncAPI

I’ve been recently talking about CloudEvents and AsyncAPI,two of my favorite open-source specifications for event-driven architectures. In this blog post, I want to talk about how you can use CloudEvents and AsyncAPI together. More specifically, I’ll show you how to document CloudEvents enabled services using AsyncAPI, thanks to the flexibility and openness of both projects. Recap: CloudEvents and AsyncAPI Let’s first do a quick recap CloudEvents and AsyncAPI. CloudEvents is an open-source specification for describing event data in a common way with the goal of increasing interoperability between different event systems. Read More →