July 2025 Summaries

Koyeb has introduced the public preview of TCP Proxy, a feature that allows users to expose TCP ports publicly, expanding beyond the previous options of HTTP, HTTP/2, WebSocket, and gRPC protocols. This development enables various TCP-based workloads, such as databases and remote access protocols, to be easily accessible over the Internet without the need for complex setups. Available across all pay-as-you-go plans, TCP Proxy can be activated with a simple configuration change in the Koyeb Dashboard or via the CLI. The feature supports direct connections for protocols like SSH and database clients, significantly enhancing accessibility and flexibility for users deploying services on Koyeb. Through a straightforward command, users can deploy an SSH server, receive an assigned public proxy host and port, and connect over the Internet, illustrating the simplicity and effectiveness of the new TCP Proxy feature.

Koyeb, a serverless platform provider, faced a latency issue with their global load balancing system, which caused delays in deploying applications. The issue was traced back to Consul's caching behavior, which unexpectedly increased CPU load due to the frequent calls to the Catalog.ListServices() endpoint. Despite not having made recent changes to their code, Koyeb discovered that enabling the UseCache option in their CoreDNS plugin inadvertently overloaded the Consul servers with background queries. This problem was exacerbated by the frequent changes in the app list, which invalidated the cache and caused the Consul Agent to repeatedly query the servers. To resolve the issue, Koyeb disabled the built-in cache parameter and implemented a minimal in-process cache to stabilize their system. This experience highlighted the importance of understanding the internal workings of tools and the potential pitfalls of hidden caching mechanisms.

Koyeb has launched the Koyeb MCP Server in public beta, enabling users to manage their resources using natural language through popular AI assistants. This server allows for the creation, deployment, and updating of services on Koyeb, as well as retrieving logs, metrics, and service details using applications like Claude or Cursor, which support the Model Context Protocol. A demo showcases deploying a new service in Washington, D.C., using Cursor, highlighting the server's integration capabilities. Users can set up the server with a JSON configuration involving a Koyeb API token for authentication, after which their AI assistants can automatically discover and interact with available Koyeb tools. The initial release includes features like listing applications and services, creating and updating services, and querying logs, with future plans to expand functionalities to include Volumes and Secrets. Feedback and suggestions are encouraged through GitHub to enhance user experience and tool offerings.