Mountpoint for Amazon S3 is optimized for read-heavy workloads that need high throughput. It intentionally does not implement the full POSIX specification for file systems.
We do eviction based on an algorithm called “least recently used” or LRU. This means that the least-requested content can be evicted from cache first to make space for more popular content when storage space is full.
The Cache Reserve Plan will mimic the low cost of R2. Storage will be $0.015 per GB per month and operations will be $0.36 per million reads, and $4.50 per million writes.
另外還有還沒公告的 Cache Reserve 的部份：
(Cache Reserve pricing page will be out soon)
對於很極致想要拼 hit rate 的使用者來說是個選擇就是了，另外可以想到直播相關的協定 (像是 HLS) 好像可以這樣搞來壓低對 origin server 的壓力？
我找了一下到底是什麼地區，目前只有看到「Wasabi Technologies Inc Status」這邊有編號 (US-East-1、US-East-2、US-Central-1、US-West-1、EU-Central-1、AP-Northeast-1)，但也沒找到地區... US 的都在美國沒問題，AP-Northeast-1 應該是日本，但 EU-Central-1 是哪裡就找不到了。
另外是 pay-as-you-go 的方案最小是 1TB，如果是歐美區的話是 US$5.99：
For customers using the Wasabi pay-as-you-go pricing model, Wasabi has a minimum monthly charge associated with 1 TB of active storage. If you store less than 1 TB of active storage in your account, you will still be charged for 1 TB of storage based on the pricing associated with the storage region you are using.
然後也有 90 天的最短計價時間：
Wasabi has a minimum storage duration policy that means if stored objects are deleted before they have been stored with Wasabi for a certain number of days (90 days when using the Wasabi pay-go pricing model), a Timed Deleted Storage charge equal to the storage charge for the remaining days will apply.
80. We split each file into 80 different encrypted pieces, and each piece is stored on a different Node.
When you retrieve an object, only 29 of its 80 pieces are needed to reconstitute that object. With no central point of failure, your data is always quickly available, all over the world.
^gt; The service will be called R2 — “one less than S3,” quipped Cloudflare CEO Matthew Prince in an interview with Protocol ahead of Cloudflare’s announcement
Oh I never thought of that. So the next one is Q1 and final one would be P0.
R2 builds on Cloudflare’s commitment to the Bandwidth Alliance, providing zero-cost egress for stored objects — no matter your request rate. Egress bandwidth is often the largest charge for developers utilizing object storage and is also the hardest charge to predict. Eliminating it is a huge win for open-access to data stored in the cloud.
That doesn’t mean we are shifting bandwidth costs elsewhere. Cloudflare R2 will be priced at $0.015 per GB of data stored per month — significantly cheaper than major incumbent providers.
在 durability 的部份，與 S3 都是一年 11 個 9：
The core of what makes Object Storage great is reliability — we designed R2 for data durability and resilience at its core. R2 will provide 99.999999999% (eleven 9’s) of annual durability, which describes the likelihood of data loss.
目前還沒有公開，算是先對市場放話：
R2 is currently under development — you can sign up here to join the waitlist for access.
