IndexedDB is primarily designed to be used asynchronously. The API is
asynchronous to prevent blocking the main thread of the web application, ensuring that the user interface remains responsive even during long-running database operations.
Most operations in
IndexedDB, such as opening a database, creating or deleting object stores, adding, retrieving, updating, or deleting data, and executing queries, are performed asynchronously. They typically involve using callbacks, promises, or event handlers to handle the results of these operations
asynchronously.
For example, when opening a database or performing database operations, you would typically handle success and error events asynchronously:
// Asynchronous usage
var request = indexedDB.open("myDatabase", 1);
request.onerror = function(event) {
console.log("Error opening database");
};
request.onsuccess = function(event) {
var db = event.target.result;
console.log("Database opened successfully");
// Further database operations can be performed here
};?
However, in some cases, you may encounter scenarios where you want to perform IndexedDB operations synchronously, such as within a Web Worker or in specific situations where synchronous access is required. While the standard IndexedDB API does not directly support synchronous access, you can use techniques like wrapping IndexedDB operations in synchronous APIs provided by libraries or frameworks, or using synchronous features provided by modern JavaScript runtimes (such as
async/await with IndexedDB promises).
However, it's important to note that forcing synchronous behavior in IndexedDB operations can potentially lead to blocking the main thread, which can degrade the performance and responsiveness of your web application. Therefore, it's generally recommended to follow the asynchronous nature of IndexedDB and design your application logic accordingly to ensure a smooth user experience.
