Crate grafos_cache 

Elastic sharded maps and TTL-driven object caches for grafOS.

This crate provides two cache building blocks:

• elastic::ElasticShardSet — a set of shards (each backed by a MemLease + FabricHashMap) that can grow and shrink at runtime.
• ttl::TtlObjectCache — an in-memory object cache with per-entry TTL and poll-driven expiry pruning.

Quick start

use grafos_cache::elastic::ElasticShardSet;
use grafos_cache::ttl::{TtlObjectCache, CacheStats};
use grafos_leasekit::RenewalPolicy;

// Elastic shard set
let mut shards: ElasticShardSet<u32, u32> =
    ElasticShardSet::new(2, 64, 8, 8)?;
shards.put(&1, &100)?;
assert_eq!(shards.get(&1)?, Some(100));

// TTL object cache
let mut cache = TtlObjectCache::<String>::new(RenewalPolicy::default());

Feature flags

Feature	Default	Effect
std	Yes	Enables std in grafos-std (thread-local mock state)
observe	No	Optional grafos-observe integration

Modules

elastic

Elastic sharded hash map backed by fabric memory.

ttl

TTL-driven object cache with poll-based expiry pruning.