Introduce an image sizes cache to improve feed layouts (close #213) (#335)

* Introduce an image sizes cache to improve feed layouts (close #213)

* Clear out resolved promises from the image cache

1 files changed, 0 insertions, 44 deletions

diff --git a/src/state/models/link-metas-view.ts b/src/state/models/link-metas-view.ts
deleted file mode 100644
index 59447008a..000000000
--- a/src/state/models/link-metas-view.ts
+++ /dev/null
@@ -1,44 +0,0 @@
-import {makeAutoObservable} from 'mobx'
-import {LRUMap} from 'lru_map'
-import {RootStoreModel} from './root-store'
-import {LinkMeta, getLinkMeta} from 'lib/link-meta/link-meta'
-
-type CacheValue = Promise<LinkMeta> | LinkMeta
-export class LinkMetasViewModel {
-  cache: LRUMap<string, CacheValue> = new LRUMap(100)
-
-  constructor(public rootStore: RootStoreModel) {
-    makeAutoObservable(
-      this,
-      {
-        rootStore: false,
-        cache: false,
-      },
-      {autoBind: true},
-    )
-  }
-
-  // public api
-  // =
-
-  async getLinkMeta(url: string) {
-    const cached = this.cache.get(url)
-    if (cached) {
-      try {
-        return await cached
-      } catch (e) {
-        // ignore, we'll try again
-      }
-    }
-    try {
-      const promise = getLinkMeta(this.rootStore, url)
-      this.cache.set(url, promise)
-      const res = await promise
-      this.cache.set(url, res)
-      return res
-    } catch (e) {
-      this.cache.delete(url)
-      throw e
-    }
-  }
-}