vibed/quotesdb/.nbd/tickets/3781c9.md

+++ title = "Verify API worker gzipped binary size is within CF Workers free tier (3 MB limit)" priority = 5 status = "todo" ticket_type = "task" dependencies = ["1f5bb5"] +++

Resolved from TRIAGE ticket 182210. The original concern (1 MB Workers free tier limit) was based on outdated information. The actual current limit is **3 MB after gzip** for the free tier (10 MB paid).

This ticket verifies that the API worker stays within that limit once all Cargo.toml dependencies are pinned (ticket 1f5bb5). No structural changes are expected — the release profile and architecture already make this highly likely.

Key facts:

• Worker size limit: Free = 3 MB (gzipped), Paid = 10 MB (gzipped)
• Cargo.toml release profile already has opt-level = "z", lto = true, strip = true, codegen-units = 1
• wrangler applies wasm-opt -Oz automatically during build
• The API Worker contains only API code (no Yew/UI); UI runs on Cloudflare Pages
• Database layer uses workers-rs D1 bindings (not SQLx) — avoids a heavy dep

Step 1 — Build the release worker bundle

From the quotesdb/ directory, after ticket 1f5bb5 has added all Cargo.toml dependencies:

wrangler deploy --outdir bundled/ --dry-run

This produces output like:

Total Upload: 523.41 KiB / gzip: 147.23 KiB

The gzip: figure is the size that counts against the 3 MB free tier limit.

Step 2 — Evaluate the result

Gzip size	Action
< 2 MB	No action needed. Note the size in this ticket.
2–3 MB	Note the size. Add a comment to track future dep additions carefully.
> 3 MB	See remediation steps below.

Step 3 (conditional) — Remediation if > 3 MB

Try in order:

1. Audit dependencies — run cargo bloat --release --crates to identify the largest contributors. Remove or replace heavy crates (e.g., swap chrono for time, avoid full tokio features).

2. Explicit wasm-opt pass — if wrangler is not applying wasm-opt for some reason:

   wasm-opt -Oz -o output.wasm input.wasm
   

3. Workers Paid plan — if the binary genuinely cannot be reduced below 3 MB, upgrade to the Workers Paid plan ($5/month, 10 MB limit). Update infra/ resources accordingly and document the decision in docs/ARCHITECTURE.md.

Step 4 — Document outcome

Record the final gzipped size in docs/ARCHITECTURE.md under the API section, and close this ticket.

# From quotesdb/ directory:
wrangler deploy --outdir bundled/ --dry-run
# Confirm "gzip: X KiB" is < 3 MB (3072 KiB)

`chore(quotesdb): verify api worker binary size within cf workers 3mb free tier limit`