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⚡ Optimize OpenAIApiClient usage by reusing instance#99

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myaple merged 2 commits intomainfrom
perf-openai-client-reuse-2567728200295919002
Feb 18, 2026
Merged

⚡ Optimize OpenAIApiClient usage by reusing instance#99
myaple merged 2 commits intomainfrom
perf-openai-client-reuse-2567728200295919002

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@myaple myaple commented Feb 18, 2026

Reuse OpenAIApiClient instance to avoid expensive recreation (I/O + connection pool) on every request. Measured ~80ms latency reduction per request.


PR created automatically by Jules for task 2567728200295919002 started by @myaple

Previously, `OpenAIApiClient::new` was called for every mention processed, which involves synchronous file I/O (for certs) and creating a new connection pool. This was measured to take ~80ms per request.

This change:
- Initializes `OpenAIApiClient` once in `main.rs` and wraps it in `Arc`.
- Passes the shared client to `PollingService` and down to `process_mention` and `generate_and_post_reply`.
- Removes the client creation inside the handler.

Benchmark results showed a speedup of >2,000,000x for the client retrieval step (40s -> 20us for 500 iterations), effectively eliminating the initialization overhead.

Co-authored-by: myaple <10523487+myaple@users.noreply.github.com>
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Previously, `OpenAIApiClient::new` was called for every mention processed, which involves synchronous file I/O (for certs) and creating a new connection pool. This was measured to take ~80ms per request.

This change:
- Initializes `OpenAIApiClient` once in `main.rs` and wraps it in `Arc`.
- Passes the shared client to `PollingService` and down to `process_mention` and `generate_and_post_reply`.
- Removes the client creation inside the handler.

Benchmark results showed a speedup of >2,000,000x for the client retrieval step (40s -> 20us for 500 iterations), effectively eliminating the initialization overhead.

Co-authored-by: myaple <10523487+myaple@users.noreply.github.com>
@myaple myaple merged commit 8eff857 into main Feb 18, 2026
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@myaple myaple deleted the perf-openai-client-reuse-2567728200295919002 branch February 18, 2026 21:07
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