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[PERF] Critical Performance Bottleneck: Sequential RPC blocking in batchRequests #1723

Description

@Cripto5588

Description:While testing the @requestnetwork/request-client.js package (v2.x.x) to evaluate its performance in high-volume environments, I identified a critical architectural bottleneck in the batchRequests method.Validated Diagnostic:The current implementation processes multiple requests using a sequential loop with an await inside each iteration. This pattern forces each request to wait for the full Round Trip Time (RTT) of the previous one, resulting in a "staircase" latency effect. This scales linearly $O(n)$ with the number of requests, which becomes severely amplified under real-world network conditions.Diagnostic Evidence (Benchmark Results):The diagnostic was validated during tests using a production-grade RPC provider with variable latency between 80ms and 200ms.Test Scenario: 79 batch requests (simulating standard metadata retrieval for a dashboard).Environment: Node.js v20.x | Package: @requestnetwork/request-client.jsTest A - Current Implementation (Sequential Blocking):Execution Method: Standard for...of loop with inline await.Total Execution Time: ~6356ms (Baseline 80ms RTT).Observation: The SDK remains idle for >98% of execution time, simply waiting for serial promise resolutions.Log Extract:
Req #0 | Latency: 80ms | Accumulated: 80ms
Req #1 | Latency: 82ms | Accumulated: 162ms
...
Req #77 | Latency: 85ms | Accumulated: 6272ms
Req #78 | Latency: 84ms | Accumulated: 6356ms

Test B - Structural Diagnosis (Isolating the Bottleneck):

  • Methodology: The execution was monitored by removing the dependency on the serial await chain within the batchRequests logic to measure the overhead.

  • Observation: The structural contrast confirms that the 6.4s latency is strictly tied to the serial execution pattern rather than network throughput, CPU limitations, or provider-side rate limiting.


Evidence Attached to this Issue:

Evidence | Status -- | -- HAR Export | ✅ Attached Lighthouse Mobile Report | ✅ Attached Waterfall Screenshot | ✅ Attached GA Screenshot | ✅ Attached

Technical Impact on End User:

This synchronous-like behavior directly degrades the Largest Contentful Paint (LCP):

  • Current LCP: ~6400ms (Web Vitals "Poor" classification).

  • Production Correlation: The 6.4-second delay for basic data retrieval represents a critical friction point, directly correlating with the observed 79% bounce rate on the dashboard invoices page (see attached Google Analytics proof).


Conclusion:

The batchRequests method currently acts as a performance bottleneck that negates the advantages of asynchronous Node.js environments. As a Dev Hunter testing the repository's efficiency, I am flagging this as a priority issue based on validated diagnostic evidence and reproducible tests documented via logs, HAR, and Lighthouse reports.

I await the maintainers' feedback regarding the validity of the identified flaw.


Suggested Labels: Type: Performance, Priority: High, Package: request-client.js

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