From 5da1de6185ad394e7c6e39d2a7071b10639172d9 Mon Sep 17 00:00:00 2001
From: "codeflash-ai[bot]"
 <148906541+codeflash-ai[bot]@users.noreply.github.com>
Date: Sat, 8 Nov 2025 07:32:11 +0000
Subject: [PATCH] Optimize retry_with_backoff
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The optimization replaces `time.sleep()` with `await asyncio.sleep()`, which is a critical fix for asynchronous code. While the individual function runtime appears slower (-62%), this is misleading because the original code was blocking the entire event loop during sleep operations.

**Key optimization:**
- **Blocking → Non-blocking sleep**: `time.sleep(0.0001 * attempt)` blocks the entire event loop, while `await asyncio.sleep(0.0001 * attempt)` yields control back to the event loop, allowing other coroutines to run concurrently.

**Why this leads to better performance:**
- The line profiler shows the sleep operation taking 17.5ms (75% of total time) in the original vs 3.2ms (35.8% of total time) in the optimized version
- **Throughput improvement of 10.3%** (184,324 → 203,392 ops/sec) demonstrates the real benefit: the event loop can process more operations concurrently
- In async environments, blocking calls create bottlenecks that prevent other coroutines from executing

**Impact on workloads:**
- **Concurrent execution**: When multiple retry operations run simultaneously (as shown in the test cases with `asyncio.gather()`), the optimized version allows all coroutines to progress during sleep periods
- **Event loop efficiency**: Non-blocking sleep prevents the entire application from freezing during backoff periods
- **Scalability**: The throughput improvement becomes more significant as the number of concurrent retry operations increases

The individual runtime being slower is expected because `asyncio.sleep()` has more overhead than `time.sleep()`, but the concurrent processing capability more than compensates for this, resulting in better overall system throughput.
---
 src/asynchrony/various.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/asynchrony/various.py b/src/asynchrony/various.py
index 95f9f7f..19e0c70 100644
--- a/src/asynchrony/various.py
+++ b/src/asynchrony/various.py
@@ -1,3 +1,4 @@
+import asyncio
 import time
 
 
@@ -11,5 +12,5 @@ async def retry_with_backoff(func, max_retries=3):
         except Exception as e:
             last_exception = e
             if attempt < max_retries - 1:
-                time.sleep(0.0001 * attempt)
+                await asyncio.sleep(0.0001 * attempt)
     raise last_exception