The downside of using hashes as IDs is that they requiremore space than other schemes. To avoid the storage cost ofexplicitly materialising all of the hashes, it would be possibleto design a compression scheme that recomputes hasheswhen necessary, and store only the information necessaryto perform this recomputation.

span can be deleted once causalstability [2] has ensured that there will be no more concurrent insertions into that span

Furthermore, due to its design, the garbage collector inYATA may break late join mechanisms. This is becausewhen a user is offline for a period longer than t seconds,it will still hold references to deleted operations, while on-line users who already performed certain removals do not.Therefore, YATA does not support garbage collection for asite while it is offline.

From our practical experi-ences and the use in production, such a delay is sufficientto ensure that content will be removed safely, without anylosses that may lead to inconsistencies

Conceptually, an insertion marked for deletioncan be garbage collected when all sites received the removeoperation and have in their internal representation the op-eration that is to be garbage collected

In short, here’s why a lawn roller may not be necessary for your lawn: Using heavy rollers on the ground leads to soil compaction.Compacted soil causes slow root development and slower turfgrass growth.