A key-value store based on unix shared-memory files (shm) for persisting state across program restarts.
Items are stored in the unix shared memory: it uses shm_open to create file in the ramdisk (/dev/shm), then they are mapped in memory with mmap.
Concurrent access to items it provided thanks to named-lock mutexes.
Value serialization can be made transparently with serde (bincode), so don't forget to use serde_bytes to enable optimized handling of &[u8] and Vec<u8> !
You can protect your data with AES256-GCM encryption.
You can add a TTL so that your items won't be available anymore after this timeout.
```rust use shmap::{Shmap, ShmapError}; use std::time::Duration;
fn main() -> Result<(), ShmapError> { let shmap = Shmap::new();
shmap.insert("key", "value")?;
let value = shmap.get("key")?;
assert_eq!(Some("value".to_string()), value);
// We strongly advise to use Shmap with TTL to avoid opening too many file descriptors,
// or using too much RAM
shmap.insert_with_ttl("key", "temporary_value", Duration::from_secs(60))?;
Ok(())
} ```