Add default TTL to Cloudflare KV Binding

[Buzut]

Describe the feature

Currently, unlike Redis, there isn't a default TTL option for Cloudflare KV Binding.

Nevertheless, it's currently possible to set the TTL manually when invoking setItem. Would be a huge addition to allow for a default TTL to be applied (if not overridden by custom TTL).

This would allow, among other things, auto pruning of stale cache entries when using KV as the default cache.

// I had something like so in mind
// /drivers/cloudflare-kv-binding.ts
setItem(key, value, topts) {
  key = r(key);
  const binding = getKVBinding(opts.binding);

  // Determine which TTL to use
  let expirationTtl: number | undefined = undefined;
  if (topts?.ttl) {
    expirationTtl = Math.max(topts.ttl, opts.minTTL ?? 60);
  } else if (opts.ttl) {
    expirationTtl = Math.max(opts.ttl, opts.minTTL ?? 60);
  } else if (opts.minTTL) {
    expirationTtl = opts.minTTL;
  }

  return binding.put(
    key,
    value,
    {
      ...topts,
      expirationTtl,
    }
  );
},

Additional information

• Would you be willing to help implement this feature?