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@lage-run/cache

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@lage-run/cache

Cache for Lage


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@lage-run/cache

This package provides:

  1. Cache interface
  2. a default cache provider that uses backfill

Usage

import { BackfillCacheProvider, RemoteFallbackCacheProvider, TargetHasher } from "@lage-run/cache";

const cacheOptions = {
  internalCacheFolder: ".cache",
  outputGlob: ["dist/**", "lib/**"]
}

const root = getWorkspaceRoot(cwd);

const remoteFallbackCacheProviderOptions = {
  root,
  localCacheProvider: cacheOptions.skipLocalCache ? undefined : new BackfillCacheProvider({
    root,
    cacheOptions: {
      outputGlob: ["dist/**"]
    }
  }),

  remoteCacheProvider: new BackfillCacheProvider({
    root,
    {
      cacheStorageOptions: {
        provider: "azure-blob",
        options: {
          connectionString: "asdfasdfasdfafds"; // Providing an un-authenitcated Blob Service Endpoint will force use of Azure DefualtAzureCredentials
          container: "container";
          maxSize?: 150;
        }
      },
      ...cacheOptions
      writeRemoteCache: true,
      outputGlob: ["dist/**", "lib/**"]
    },
    isReadOnly: cacheOptions.writeRemoteCache !== true,
  })
}

const cacheProvider = new RemoteFallbackCacheProvider(remoteFallbackCacheProviderOptions);
const hasher = new TargetHasher({
  root,
  environmentGlob: ["lage.config.js"],
  cacheKey: "some cache key",
})

let hash: string | null = null;
let cacheHit = false;

if (target.cache && !skipCaching) {
  hash = await hasher.hash(target, cliArgs);

  if (hash && !shouldResetCache) {
    cacheHit = await cacheProvider.fetch(hash, target);
  }
}

// DO TARGET RUN ACTIONS
// ...

await cacheProvider.put(hash, target);

Differentiating Cache

To specifically differentiate the hash generated for the cache, between different steps the parameter cacheKey can be used. The parameter will be a part of the hash generation for the cache, and generated hash can be altered by modifying the parameter.

Usage

Add the parameter in your lage.config.js as follows

{
  cacheOptions: {
    cacheKey: "some cache key";
  }
}

FAQs

Package last updated on 25 Jun 2024

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