• Deep dive in "context canceled" errors on Go web servers

    calendar Jun 29, 2023 · 3 min read · Web Go  ·
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    At iheartjane, we use Go web server to serve Ad requests. After some time in production, we noticed a lot of “context canceled” error logs. The following screenshot of CloudWatch Log Insights query shows the frequency of “context canceled” errors. It left us puzzled about the underlying causes of these context cancels. …


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  • Simplicity By Default

    calendar May 23, 2023 · 3 min read · Guide  ·
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    I’ve observed quite a few instances where engineers, including myself, have created unnecessarily complex solutions. To cultivate a better R&D organization, it is crucial to choose simplicity by default. In this blog, we’ll look at three don’ts and three do’s that help make simplicity the default. Don’t invent …


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  • Six Options for Generating Distributed Unique IDs

    calendar Apr 20, 2023 · 7 min read · Distributed System Go  ·
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    Identifying unique entities is a frequent requirement in software development. For instance, assigning a unique ID to each Ad impression enables us to link related events for billing and analysis. However, generating unique IDs becomes challenging when dealing with large distributed systems. In this survey, we explore …


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  • Creating test doubles in Go, manual or auto-generated?

    calendar Mar 30, 2023 · 4 min read · Go Testing  ·
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    We set up test doubles when it is difficult or impossible to use real objects due to complexity or external dependencies. In Go, an interface is a collection of method signatures that define a set of behaviors. With interfaces, it is easy to create test doubles in Go. However, should you write test doubles on your own, …


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  • calendar Jan 1, 0001 · 1 min read  ·
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    local modules, fmi-otel, are removed from go.mod.


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