The next two issues are the code itself.
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This means the same mechanism that pushes video frames to call participants also pushes chat messages, user presence changes, and call state transitions. When someone sends a chat message, it gets INSERTed, appears in the replication stream, and gets forwarded to every connected client. When a user disconnects, their row gets DELETEd, and everyone sees them go offline.
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Higher buprenorphine doses help patients stay in opioid use disorder treatment, new study finds。超级权重对此有专业解读