Sharding connector2

* redis lookup server: Fix empty batched_remove

This commit fixes a possible exception when trying to call batched_remove with an empty set of keys.

Signed-of-by: Or Ozeri <oro@il.ibm.com>

* p2p: disable distributed server

Currently, the p2p distributed server is broken in vllm v1.
This commit disables it for now.

Signed-off-by: Or Ozeri <oro@il.ibm.com>

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Signed-off-by: Or Ozeri <oro@il.ibm.com>

RedisLookupServer: Batch requests

Bugfix 1189

* [XWKV-48] Implement gismo backend (LMCache#7)

* [XWKV-48] Cache fd to optimize performance (LMCache#11)

Cache fd to optimize performance.

Add thread pool to read/write file in parallel.

* [XWKV-48] Support remotely read kv (LMCache#12)

As Gismo supports locally read files
written remotely, we need to change our code
to make sure we can read files not cached.

* [XWKV-68] Use vram API to boost performance (LMCache#13)

As vram read/write API to boost performance.

Use new get/put method to read/write meta file.

* [XWKV-68] Use batched contains API

Use mvfs batched contains API to implement
batch contains interface to
boost performance.

Add retry when get metadata in case lmcache
reads faster than backend.

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Co-authored-by: Jinwen <287310886@qq.com>

…LMCache multiprocess mode (#35931) (LMCache#7)

Signed-off-by: idellzheng <idellzheng@tencent.com>