Sitelet https://github.com/init4tech/builder/pull/259/commits/1bda519a113a33d2ccfacd1e30d397e6e0928735
Skip to content

feat: replace TxPoller polling with SSE streaming #259

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
Evalir merged 10 commits into from
May 7, 2026
Merged

feat: replace TxPoller polling with SSE streaming #259

Changes from 1 commit
Commits
Show all changes
10 commits
Select commit Hold shift + click to select a range
65ca87c
feat: replace TxPoller polling with SSE streaming
Evalir Apr 2, 2026
7d0d80d
fix: rustfmt and rustdoc CI failures
Evalir Apr 2, 2026
1bef5f5
fix: make TxPoller reconnect responsive to block env changes
Evalir Apr 15, 2026
015b51d
refactor: apply PR #259 review feedback
Evalir Apr 23, 2026
0fea377
refactor: split fetch from dispatch in TxPoller
Evalir Apr 27, 2026
ddf5548
refactor: apply fraser's PR #259 review feedback
Evalir Apr 28, 2026
6dfe101
refactor: hold reconnect backoff on TxPoller
Evalir Apr 29, 2026
8cbd998
Merge remote-tracking branch 'origin/main' into evalir/eop/sse-tx-poller
Evalir Apr 30, 2026
a7c71a8
refactor: use backon for SSE reconnect backoff
Evalir May 5, 2026
1bda519
refactor: tighten SSE reconnect backoff floor and reset placement
Evalir May 6, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
refactor: tighten SSE reconnect backoff floor and reset placement
  • Loading branch information
@Evalir
Evalir committed May 6, 2026
commit 1bda519a113a33d2ccfacd1e30d397e6e0928735
11 changes: 9 additions & 2 deletions src/tasks/cache/tx.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -17,9 +17,16 @@ use tracing::{Instrument, debug, debug_span, trace, trace_span, warn};

type SseStream = Pin<Box<dyn Stream<Item = Result<TxEnvelope, TxCacheError>> + Send>>;

const INITIAL_RECONNECT_BACKOFF: Duration = Duration::from_secs(1);
const INITIAL_RECONNECT_BACKOFF: Duration = Duration::from_millis(250);
const MAX_RECONNECT_BACKOFF: Duration = Duration::from_secs(30);

/// Builds the SSE reconnect backoff iterator.
///
/// Yields delays of 250ms, 500ms, 1s, 2s, 4s, 8s, 16s, 30s, 30s, … — doubling
/// each step, capped at [`MAX_RECONNECT_BACKOFF`] and unbounded in count.
/// Retries are intentionally unbounded: the per-block-env full refetch in
/// [`TxPoller::task_future`] is the floor on correctness, so SSE is a
/// best-effort latency optimization on top of it.
fn reconnect_backoff() -> ExponentialBackoff {
ExponentialBuilder::default()
.with_factor(2.0)
Expand Down Expand Up @@ -172,11 +179,11 @@ impl TxPoller {
) -> ControlFlow<()> {
match item {
Some(Ok(tx)) => {
self.reconnect_backoff = reconnect_backoff();
if outbound.is_closed() {
trace!("No receivers left, shutting down");
return ControlFlow::Break(());
}
self.reconnect_backoff = reconnect_backoff();
self.spawn_check_nonce(tx, outbound.clone());
}
Some(Err(error)) => {
Expand Down