Definitions
- Attempt - one execution of an operation.
- Retry - another attempt after a failure.
- Backoff - a delay before another attempt.
Comparison. These invented policies differ in their delays between attempts.
Policy First delay Second delay Maximum retries Immediate 0 seconds 0 seconds 2 Fixed 1 second 1 second 2 Increasing 1 second 2 seconds 2 - The values illustrate table rendering rather than report measured service behavior.
Image. The curve shows the function
y = x²over the interval[-3, 3].
- The image's natural dimensions are 1000 by 640 pixels.
- The Full size button removes the default 200-pixel height limit.
Flow. A failed attempt waits before a retry while attempts remain.
flowchart TD A[Make an attempt] --> B{Succeeded?} B -->|Yes| C[Return the result] B -->|No| D{Attempts remain?} D -->|Yes| E[Wait for backoff] E --> A D -->|No| F[Return the failure]- The comparison table [2] supplies illustrative choices for the wait.
Sequence. This caller receives a result after one failed attempt and one successful retry.
sequenceDiagram participant Caller participant Service Caller->>Service: First attempt Service-->>Caller: Failure Note over Caller: Wait for backoff Caller->>Service: Retry Service-->>Caller: Result
- This diagram shows one path through the retry flow [4].
The same quadratic plot as an image-only bullet