blackpink

🦄 BLACKPINK

A Simple Redis Utility Function

npm install blackpink
npm install redis

Check is newest list item

This function allows you to use Redis to check that the data is up to date. It also allows you to check the maximum number.

import * as redis from "redis";
import blackpink from "blackpink";

const client = redis.createClient({});
const pink = blackpink(client);

void (async () => {
  const list = ["a1.png", "a2.png", "a3.png"];
  let isFirstLoop = true;

  for (const item of list) {
    const isNewest = await pink.checkIsNewest({
      list: "community-meme",
      item,
      isFirstLoop,
      limit: 300,
    });

    if (isFirstLoop) isFirstLoop = false;

    if (isNewest) {
      console.log("new meme", item);
      break;
    } else {
      console.log("old meme", item);
    }
  }
})();

Cache single item

import * as redis from "redis";
import blackpink from ".blackpink";

const client = redis.createClient({});
const pink = blackpink(client);

void (async () => {
  // Set cache
  await pink.setCache({
    key: "test",
    value: "test",
    // 7days
    ttl: 60 * 60 * 24 * 7,
  });

  // Get cache
  const data = await pink.getCache("test");
  console.log(data);

   // Check cache hit
  const isHit = await pink.isCacheHit("test")
  console.log(isHit);

  // Invalidate cache
  await pink.invalidateCache("test");
})();

Cache map item

import * as redis from "redis";
import blackpink from ".blackpink";

const client = redis.createClient({});
const pink = blackpink(client);

void (async () => {
  // Set hash cache
  await pink.setHashCache({
    key: "test",
    field: "test",
    value: "test",
  });

  // Get hash cache
  const data = await pink.getHashCache({
    key: "test",
    field: "test",
  });

  // Check hash cache hit
  await pink.isHashCacheHit({
    key: "test",
    field: "test",
  });

  // Invalidate hash cache
  await pink.invalidateHashCache({
    key: "test",
    field: "test",
  });

  // Invalidate all hash cache
  await pink.invalidateAllHashCache("test");
})();

License

MIT Licensed