Cloud egress: Cloudflare R2 vs Backblaze B2 compare
Cloudflare R2 and Backblaze B2 both market egress-friendly object storage, but download caps (often multiples of stored bytes), CDN pairing, multi-cloud pull exceptions, and API/ops classes differ. Batch-21 thickens a second worked download-cap/ops stack with a numbered table (3× overage, steady-inside-cap, 50M ops, 4× restore spike) so FinOps never blends GB with LIST/PUT. Compare path templates and ops meters first — leave $/GB Unknown until verified on dated provider pages. Free-egress marketing is not a free-tier cliff twin and not S3 CRR.
Updated
Both market egress-friendly storage — thicken download-cap multiples, restore spikes, and Class A/B ops as separate Unknown cells.
Path matrix: Cloudflare R2 vs Backblaze B2 download and ops topics (educational)
Dated starting points only — Unknown until verified means no invented $/GB. PipeToll does not scrape private consoles or guarantee figures.
This spoke compares object-store egress path classes with path templates. Rates stay Unknown until verified. Do not treat “free egress” as universal. Caps and excluded destinations appear in fine print. PipeToll compares path templates and allotment shapes — not logo preference.
Path templates to model
Browser ← Internet ← bucket — public asset download; watch allotments vs stored bytes.
Browser ← CDN ← bucket — who bills origin fill vs edge bandwidth?
AWS/GCP job ← pull from B2/R2 — multi-cloud download exceptions may apply.
App server chatty LIST/GET — ops pricing can dominate small-object workloads.
Quiet-month annualization — Averaging a calm month understates restore spikes that blow through download-cap multiples of stored bytes. Model a 3×–4× spike twin beside the steady line.
Ops fees ignored — Class A/B or API call SKUs can dominate LIST/PUT-heavy apps even when download GB looks “free.” Keep ops as a separate Unknown cell from download GB.
Partner CDN = public list — Partner CDN / multi-cloud pull programs often diverge from public list prices. Verify destination exceptions before migration math.
“Free egress” covers every pull destination — Allotments rarely cover every multi-cloud destination. Fine print can reclassify some pulls as billable.
Allotments confused with AWS cliffs / S3 CRR — Object-store download caps are not AWS compute free-tier cliffs and not S3 CRR durability traffic. Keep the three path classes separate.
Migration egress forgotten — Switching vendors can bill source egress and destination ops in the cutover month. Sibling literacy: S3 vs R2, Blob vs R2.
Scorecrowns from Incomplete — No savings guarantees when switching vendors. Badge unverified rates Unknown until verified.
FinOps checklist
Measure stored GB and downloaded GB for 90 days; note peak restore months.
Read current free-egress multiples (download caps vs stored bytes) and excluded destinations (multi-cloud pulls, partner CDN rules).
Separate ops/request cost from download GB in the model — chatty LIST/PUT can dominate small-object apps.
Second educational stack (download-cap / ops trap): store 2 TB, steady download 1 TB (inside a hypothetical 3× allotment) but 50M Class A LIST/PUT-style ops in the same month — ops SKUs can exceed the quiet download line (rows #3–#4). Run Mode A for GB with ?path=r2-b2&gb=1000, then add ops from dated pricing pages as a separate Unknown cell. Restore spike twin: same 2 TB store + 8 TB one-month restore (4×) — test the cap cliff with ?path=r2-b2&gb=8000. Primary 3× walkthrough (10 TB store / 30 TB download) stays on ?gb=30000. Multi-cloud pull exceptions and partner CDN rules remain fine-print rows — verify before migration math. Sibling literacy: S3 vs R2, Blob vs R2, CDN origin fill.
Worked-estimate sensitivity (educational)
Hold the 10 TB store / 30 TB download (3×) baseline and walk three object-store path-class runs. Download overage $/GB, Class A/B ops, and partner-pull exceptions stay Unknown until dated cites — literacy only, not a vendor switch ROI.
Run A — Cap cliff split: 30 TB download on Mode A (?path=r2-b2 · 30 TB) against a stored-bytes allotment. Keep storage SKU out of the egress cell; never invent overage $/GB.
Run B — Ops-heavy twin: 2 TB store · 1 TB download (inside a hypothetical 3× allotment) but 50M Class A LIST/PUT-style ops. Run ?path=r2-b2&gb=1000 for GB only; add ops from dated pricing as a separate Unknown cell.
Run C — Restore-spike sibling: same 2 TB store + 8 TB one-month restore (4×) — test the cap cliff with ?gb=8000. Pair CDN-fronted browsers with CDN origin fill / Mode C when edge sits in front.
Not always. Destination exceptions and partner CDN rules appear in fine print. Verify before migration math.
What breaks a “cheap egress” story?
Chatty LIST/PUT ops, retention minimums, and download caps relative to stored bytes. A restore month that jumps from 1× to 3×–4× of stored bytes can flip $0-looking download into overage while Class A ops still bill separately — walk Runs B/C in the worked-estimate sensitivity table and keep rates Unknown until verified.
How should FinOps compare R2 and B2?
Normalize path templates and ops classes first; then apply dated rates — never crown a winner from Incomplete cells.
How do I model a download-cap month vs an ops-heavy month?
Keep two Unknown cells: (1) download GB × overage after the stored-bytes multiple, (2) Class A/B or API call units × dated ops rates. A quiet 1 TB download under a 3× allotment can still lose to 50M LIST/PUT ops. Run Mode A (?path=r2-b2) for GB only — never blend ops into the GB cell.
Where does CDN pairing fit?
Browser ← CDN ← bucket shifts who bills origin fill vs edge bandwidth. Pair this spoke with CDN origin fill / Mode C when a CDN sits in front; keep R2/B2 download allotments off the AWS free-tier cliff and S3 CRR lines.
How do download caps and ops traps show up on a bill?
Download allotments are often multiples of stored bytes — a restore month can flip $0-looking traffic into overage. Separately, Class A/B (or API call) pricing can dominate small-object / LIST-heavy workloads even when download GB stays inside the cap. Model GB and ops as two Unknown cells; never one blended number.
Is this the same as AWS free-tier cliffs or S3 CRR?
No. Object-store download caps are allotment rules on R2/B2-class products. Multi-cloud free-tier cliffs cover compute/Internet grants that cliff after a fixed GB. S3 CRR is bucket→bucket inter-region replication. Keep the three path classes separate.
Trademarks: Amazon Web Services, AWS, Microsoft Azure, Google Cloud Platform, GCP, and Cloudflare are trademarks of their respective owners. PipeToll (Ameti One LLC) is not affiliated with, endorsed by, or sponsored by those companies. Educational comparisons may be outdated — verify current rates with each provider.
