Retry Policy Example

Demonstrates client retry with exponential backoff. Shows RetryPolicy configuration including max_retries, initial_delay_ms, max_delay_ms, backoff_multiplier, and retry_on_status.

Demo Program

const default = httpx.RetryPolicy{};
// max_retries, initial_delay_ms, backoff_multiplier, etc.

const no_retry = httpx.RetryPolicy.noRetry();
const aggressive = httpx.RetryPolicy.aggressive();

const custom = httpx.RetryPolicy{
    .max_retries = 10,
    .initial_delay_ms = 200,
    .backoff_multiplier = 3.0,
    .retry_on_status = &.{ 429, 500, 502, 503, 504 },
};

const delay = custom.calculateDelay(attempt);
const should = custom.shouldRetryStatus(503); // true

Run

zig build example-retry-example

Checklist

• [x] Default retry policy has sensible defaults
• [x] RetryPolicy.noRetry() disables all retries
• [x] RetryPolicy.aggressive() uses higher retry counts
• [x] Exponential backoff doubles delay each attempt
• [x] calculateDelay returns correct backoff values
• [x] shouldRetryStatus checks against configured status list
• [x] Status 429 (rate limit) triggers retry