express-mongodb-rest-api-boilerplate VS node-redlock

async function create(req, res) { let lock; try { // Try to acquire the lock lock = await service.urlService.acquireLock( "URL:CREATE:ExclusiveLock", 100 ); const { longURL } = req.body; // Check if the mapping already exists const mapping = await service.urlService.findByLongURL(longURL); if (mapping) { return res.status(HTTP_STATUS_CODES.SUCCESS).json({ status: true, message: "Short slug created successfully", data: { slug: mapping.slug }, }); } // New long URL, generate a new and unique slug const slug = service.urlService.generateNewSlug(); // save short URL <> long URL mapping to the database await service.urlService.saveToDB(slug, longURL); // Return the newly generated short slug return res.status(HTTP_STATUS_CODES.SUCCESS).json({ status: true, message: "Short slug created successfully", data: { slug }, }); } catch (err) { return res.status(HTTP_STATUS_CODES.INTERNAL_SERVER_ERROR).json({ status: false, message: "Could not create short slug", error: err, }); } finally { /** * Manually release the lock when the operation is complete * * NOTE: Redlock's release method is not a no-op, it throws an error if you try to release an already expired lock ([more here](https://github.com/mike-marcacci/node-redlock/issues/168#issuecomment-1165700540)). Setting a small TTL usually triggers this unexpected behavior. * As a workaround, we're ignoring the errors from lock.release() */ if (lock) await lock.release().catch(() => {}); } }

Example: The following example uses Node.js npm module Redlock, which implements Redlock. Redlock is available as a package in many languages.