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OpenAI's self-developed Git backend Pando has launched and has taken over the main code repository

After Cursor and Anthropic, OpenAI announced its self-developed Git backend Pando, which has now taken over the company's entire main code repository. Over the past year, Codex has enabled engineers to deploy a large number of Agents to write code simultaneously, resulting in an increase in code branches, pushes, merges, and pull requests. OpenAI's original system experienced frequent stalls and merge failures, with reliability even dropping below 90%.One engineer is responsible for the core architecture design, and multiple Codex Agent teams participated in the implementation, with Pando going into production in 10 weeks. This backend allows code pushes from different branches to be processed in parallel without queuing each other. When pulling code, data packets are no longer generated separately for each client but instead reuse existing Git data packets, distributing them directly through caching. After the transformation, the median latency of code pushes was reduced by nearly 80%, distributing nearly 1 PB of data daily, with a cache hit rate exceeding 99%, but different branches no longer guarantee to present the same state at the same moment.Cursor's Origin is still based on Git, primarily aimed at replacing GitHub as a code hosting service. Anthropic's Scion, on the other hand, has abandoned Git, placing commits, merges, and historical queries on the server side. OpenAI retains the Git client and protocol, only reconstructing the backend, so engineers and Agents do not need to change their original development processes significantly.
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