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Caution Review failedThe pull request is closed. WalkthroughExplicit 2-second delays were introduced in the Changes
Sequence Diagram(s)sequenceDiagram
participant Client
participant ZeroAgent
participant Driver
Client->>ZeroAgent: syncThreads()
ZeroAgent->>Driver: list()
Note right of ZeroAgent: Wait 2 seconds
loop For each thread in page
ZeroAgent->>ZeroAgent: syncThread(thread)
Note right of ZeroAgent: Wait 2 seconds
end
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PR Summary
Added rate limiting protection in apps/server/src/routes/chat.ts by implementing fixed delays around thread syncing operations.
- Added 2-second delays before thread listing and between individual thread syncs to prevent API rate limiting
- Consider implementing a more dynamic rate limiting solution that adapts to API response headers and server load
- Fixed delays could significantly impact performance during bulk operations
1 file reviewed, 2 comments
Edit PR Review Bot Settings | Greptile
| // Need delay to avoid rate limiting | ||
| await new Promise((resolve) => setTimeout(resolve, 2000)); |
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style: Consider using exponential backoff with jitter instead of fixed delays. This provides better rate limiting protection while being more efficient.
| // Need delay to avoid rate limiting | ||
| await new Promise((resolve) => setTimeout(resolve, 2000)); | ||
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| for (const thread of result.threads) { | ||
| try { | ||
| await this.syncThread(thread.id); | ||
| // Need delay to avoid rate limiting | ||
| await new Promise((resolve) => setTimeout(resolve, 2000)); |
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style: Extract delay value to an environment variable or constant to make it configurable across environments.
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Bug: API Rate Limiting Delay Bypass
The rate limiting delay after syncThread is placed inside the try block. If syncThread fails, this delay is skipped, causing subsequent API calls to occur immediately without proper spacing. This can lead to hitting or exacerbating API rate limits. The delay should be moved outside the try-catch block to ensure it always executes.
apps/server/src/routes/chat.ts#L974-L983
Zero/apps/server/src/routes/chat.ts
Lines 974 to 983 in 244b14b
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cubic found 1 issue across 1 file. Review it in cubic.dev
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| // Need delay to avoid rate limiting | ||
| await new Promise((resolve) => setTimeout(resolve, 2000)); |
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Introducing a fixed 2-second delay blocks the Durable Object for every page fetch, significantly increasing total execution time (e.g., 40 threads × 2s = 80s) and can exceed Cloudflare Durable Object runtime limits or cause request timeouts, defeating concurrency and wasting CPU billing; implement adaptive back-off or queueing instead of an unconditional sleep.
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Summary by cubic
Added 2-second delays before and after syncing each thread in the chat route to prevent API rate limiting.
Summary by CodeRabbit