The third guest post on Internals for Interns is live! "Understanding Testcontainers: The Ryuk Reaper" is written by @mdelapenya, a friend from the Go community, Staff Engineer at @Docker and the maintainer of testcontainers-go. He also writes the "Understanding Testcontainers" series on his own blog, so check that out. In this post he talks about Ryuk, a small sidecar container whose only job is deleting the Docker resources your tests created, when your tests die. The design has three pieces, and they're all beautifully small: - Labels answer "what's mine?" - A held TCP connection that works as a deadman switch. - A grace period stops false positives. Read it here: internals-for-interns.com/po… #Go #Docker #Testcontainers