DEFAULT_TARGET
DEFAULT_TARGET = 1048576
Target pack size in bytes.
Batches small frames into one object.
At 16 KiB a frame is far too small to be its own object. R2 charges $4.50 per million Class A operations and a 15-second flush interval already costs about 202,000 of them per month before any frames are counted; storing each frame separately would add one per frame and put the request bill an order of magnitude above the storage bill.
A pack is a flat concatenation with the directory at the end. The frame bytes carry no framing of their own, so a reader that knows a frame's offset and length fetches exactly that range with one ranged GET and never downloads the rest. The local frame index holds the same offsets, so an ordinary read never touches the directory and costs no extra request; the directory is what lets the local index be rebuilt from the bucket after it is dropped.
shouldStoreAlone(int $size) : bool
Whether a frame should bypass packing entirely.
A frame at or above the target gains nothing from being batched and would push every frame behind it into a second pack, so it is stored as its own object.
| int | $size | Encoded frame size in bytes. |
TRUE when the frame should be stored standalone.