python-resilience

Python resilience patterns including automatic retries, exponential backoff, timeouts, and fault-tolerant decorators. Use when adding retry logic, implementing timeouts, building fault-tolerant services, or handling transient failures.

1.16x

Quality

82%

Does it follow best practices?

Impact

100%

1.16x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

Evaluation results

100%

12%

Payment Gateway Client with Fault Tolerance

Tenacity retry with exception filtering

Criteria

Without context

With context

Tenacity library used

100%

Exponential jitter wait

100%

Dual stop condition

100%

Transient exception whitelist

100%

No retry on ValueError/TypeError

100%

No retry on auth/4xx errors

100%

httpx for HTTP calls

100%

Timeout on HTTP call

100%

Retry on decorator

100%

Before-sleep logging

100%

18%

Weather Data Aggregation Service

HTTP status code retry with combined conditions

Criteria

Without context

With context

retry_if_result for status codes

100%

Correct retry status codes

100%

Combined retry conditions

50%

100%

structlog for logging

100%

Before-sleep logging

100%

Jitter in wait strategy

100%

httpx for HTTP calls

100%

Timeout on HTTP call

100%

Network exceptions whitelisted

60%

100%

Design doc covers both conditions

100%

10%

Recommendation Engine Service Refactor

Decorator stacking, fail-safe, and dependency injection

Criteria

Without context

With context

asyncio.wait_for in timeout decorator

100%

@wraps preserves metadata

100%

Fail-safe decorator implemented

100%

Fail-safe returns empty list default

100%

Stacked decorators on method

100%

Dataclass for service

100%

Logger injected via constructor

100%

Metrics client injected via constructor

100%

Protocol-based type hints

100%

Test vs production instantiation

100%

Fail-safe logs failure

100%

Repository: wshobson/agents
Commit: 03d0b4b

Evaluated: about 1 month ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Payment Gateway Client with Fault Tolerance Weather Data Aggregation Service Recommendation Engine Service Refactor

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