[WIP] feat: Span Streaming POC

[Lms24]

Don't review this PR (yet)!

Just opened the PR for easier sharing, CI and bundle size measurements

(the real deal will follow in reviewable pieces)

[github-actions]

size-limit report 📦

Path	Size	% Change	Change
@sentry/browser	24.38 kB	+0.48%	+116 B 🔺
@sentry/browser - with treeshaking flags	22.88 kB	+0.47%	+107 B 🔺
⛔️ @sentry/browser (incl. Tracing) (max: 40.7 kB)	40.82 kB	+0.94%	+378 B 🔺
@sentry/browser (incl. Tracing, Replay)	79.21 kB	+0.49%	+382 B 🔺
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	68.88 kB	+0.59%	+401 B 🔺
@sentry/browser (incl. Tracing, Replay with Canvas)	83.89 kB	+0.47%	+387 B 🔺
⛔️ @sentry/browser (incl. Tracing, Replay, Feedback) (max: 96 kB)	96.07 kB	+0.4%	+375 B 🔺
@sentry/browser (incl. Feedback)	41.09 kB	+0.32%	+127 B 🔺
⛔️ @sentry/browser (incl. sendFeedback) (max: 29 kB)	29.03 kB	+0.41%	+116 B 🔺
@sentry/browser (incl. FeedbackAsync)	33.95 kB	+0.3%	+100 B 🔺
@sentry/react	26.08 kB	+0.41%	+106 B 🔺
@sentry/react (incl. Tracing)	42.83 kB	+0.97%	+411 B 🔺
⛔️ @sentry/vue (max: 29 kB)	29.18 kB	+1.43%	+411 B 🔺
@sentry/vue (incl. Tracing)	42.63 kB	+0.89%	+375 B 🔺
@sentry/svelte	24.4 kB	+0.47%	+113 B 🔺
CDN Bundle	25.86 kB	+0.34%	+86 B 🔺
CDN Bundle (incl. Tracing)	40.73 kB	+0.99%	+396 B 🔺
CDN Bundle (incl. Tracing, Replay)	76.96 kB	+0.5%	+378 B 🔺
CDN Bundle (incl. Tracing, Replay, Feedback)	82.46 kB	+0.46%	+377 B 🔺
CDN Bundle - uncompressed	75.59 kB	+0.32%	+239 B 🔺
⛔️ CDN Bundle (incl. Tracing) - uncompressed (max: 120 kB)	120.57 kB	+1.02%	+1.21 kB 🔺
CDN Bundle (incl. Tracing, Replay) - uncompressed	235.73 kB	+0.52%	+1.21 kB 🔺
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	248.49 kB	+0.49%	+1.21 kB 🔺
@sentry/nextjs (client)	44.83 kB	+0.93%	+409 B 🔺
⛔️ @sentry/sveltekit (client) (max: 41 kB)	41.25 kB	+0.95%	+385 B 🔺
@sentry/node-core	50.66 kB	+0.2%	+97 B 🔺
@sentry/node	154.58 kB	+0.27%	+402 B 🔺
@sentry/node - without tracing	92.53 kB	+0.12%	+109 B 🔺
@sentry/aws-serverless	106.24 kB	+0.1%	+104 B 🔺
⛔️ @sentry/browser (incl. Tracing with Span Streaming) (max: 41.5 kB)	41.87 kB	added	added

View base workflow run

[github-actions]

node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

Scenario	Requests/s	% of Baseline	Prev. Requests/s	Change %
GET Baseline	8,833	-	8,651	+2%
GET With Sentry	1,381	16%	1,353	+2%
GET With Sentry (error only)	6,237	71%	6,047	+3%
POST Baseline	1,200	-	1,171	+2%
POST With Sentry	544	45%	514	+6%
POST With Sentry (error only)	1,049	87%	1,036	+1%
MYSQL Baseline	3,299	-	3,260	+1%
MYSQL With Sentry	392	12%	452	-13%
MYSQL With Sentry (error only)	2,706	82%	2,663	+2%

View base workflow run