Notifikasi Peristiwa S3
Konfigurasikan S3 untuk menerbitkan peristiwa ke Lambda, SQS, atau SNS setiap kali tindakan tertentu terjadi pada objek, sehingga alur kerja reaktif dapat dibuat.
Notifikasi Peristiwa S3 adalah pelajaran AWS for Backend Developers (EC2, S3, RDS, Lambda) gratis di CoddyKit. Ini adalah pelajaran 3 dari 4. Kamu bisa membaca pelajaran lengkapnya di bawah secara gratis — lalu praktikkan langsung di browser dengan editor kode bawaan dan tutor AI 24/7. Ini adalah bagian dari jalur belajar AWS for Backend Developers (EC2, S3, RDS, Lambda), dan progresmu tersinkronisasi di web dan aplikasi CoddyKit. Kursus AWS for Backend Developers (EC2, S3, RDS, Lambda) mencakup 4 pelajaran total.
Bagian dari pelajaran ini belum diterjemahkan dan ditampilkan dalam bahasa Inggris.
Intro to S3 Event Notifications
Welcome to this lesson on S3 Event Notifications! This powerful feature allows your S3 buckets to automatically notify other AWS services when specific actions occur.
Think of it as setting up an alert system for your data. When a file is uploaded, deleted, or modified, S3 can tell another service to take action.
The Event Flow
S3 event notifications work by publishing an event message whenever a configured action happens in your bucket. These messages contain details about the event, such as the bucket name, object key, and event time.
- Object Created: When a new file is uploaded.
- Object Deleted: When a file is removed.
- Object Restore: When an archived object is restored.
These events enable powerful, reactive workflows for your applications.
Common Event Destinations
S3 can send these event notifications to several AWS services. The most common destinations are:
- AWS Lambda: For running custom code in response to events (e.g., resizing images, processing data).
- Amazon SQS (Simple Queue Service): For queuing events reliably for later processing by other applications.
- Amazon SNS (Simple Notification Service): For fanning out notifications to multiple subscribers (e.g., sending emails, triggering other services).
Choosing the right destination depends on your specific use case.
Setting Up Notifications
Configuring S3 event notifications is done at the bucket level. You define which event types you want to monitor and which destination service should receive the notifications.
You can also apply filters to only trigger notifications for objects with specific prefixes (folders) or suffixes (file extensions).
Example: Notifying on New Objects
A very common use case is triggering an event when new objects are created (uploaded) to an S3 bucket. This can kick off an automated process.
For instance, if users upload profile pictures, an s3:ObjectCreated:Put event can trigger a Lambda function to resize the image and store different versions.
Lambda for Processing Events
AWS Lambda is an excellent choice for processing S3 events because it's serverless. You only pay when your code runs, and it scales automatically.
When S3 sends an event to Lambda, the event details are passed as an input to your Lambda function, allowing your code to react specifically to what happened.
Lambda Event Handler
Here's a simple Python Lambda function that receives and logs an S3 event. This is the entry point for your custom logic.
Try running it to see how the event structure looks!
import json
def lambda_handler(event, context):
print("Received S3 event:")
print(json.dumps(event, indent=2))
# Extract bucket and key from the event
for record in event['Records']:
bucket_name = record['s3']['bucket']['name']
object_key = record['s3']['object']['key']
print(f"Object '{object_key}' in bucket '{bucket_name}' was {record['eventName']}")
return {
'statusCode': 200,
'body': json.dumps('Event processed successfully!')
}Linking S3 to Lambda
To connect your S3 bucket to a Lambda function, you configure the notification settings in the S3 console or via AWS CLI/SDK.
You'll select the event types (e.g., 'All object create events'), choose 'Lambda Function' as the destination, and specify your function's ARN. You can also add prefix and suffix filters here.
SQS & SNS for Events
While Lambda is great for immediate code execution, SQS and SNS offer different benefits:
- SQS: Ideal for buffering events, decoupling components, and ensuring messages are processed even if the consumer is temporarily unavailable.
- SNS: Perfect for fan-out scenarios, where one event needs to trigger multiple subscribers (e.g., sending an email notification AND triggering a Lambda function).
They provide flexibility for complex architectures.
Event Notification Check
Let's test your understanding of S3 Event Notifications.
S3 Events Recap
Great job! You've learned about S3 Event Notifications, a powerful feature for creating reactive, event-driven architectures.
- S3 publishes events for actions like object creation or deletion.
- These events can be sent to Lambda, SQS, or SNS.
- You can use filters (prefix/suffix) to control which events trigger notifications.
This allows you to automate tasks and build dynamic applications based on changes in your S3 buckets!
Pertanyaan yang Sering Diajukan
Apakah pelajaran “Notifikasi Peristiwa S3” gratis?
Ya — teks lengkap “Notifikasi Peristiwa S3” gratis dibaca di sini di web. Untuk praktiknya secara interaktif (editor kode bawaan dan tutor AI 24/7) dan buka sisa kursus AWS for Backend Developers (EC2, S3, RDS, Lambda), upgrade ke CoddyKit PRO. Kursus AWS for Backend Developers (EC2, S3, RDS, Lambda) mencakup 4 pelajaran total.
Apa yang akan aku pelajari di “Notifikasi Peristiwa S3”?
Konfigurasikan S3 untuk menerbitkan peristiwa ke Lambda, SQS, atau SNS setiap kali tindakan tertentu terjadi pada objek, sehingga alur kerja reaktif dapat dibuat. Kamu berlatih AWS for Backend Developers (EC2, S3, RDS, Lambda) dengan kode praktik yang langsung kamu jalankan di browser, dan tutor AI 24/7 menjawab pertanyaanmu saat kamu mengerjakan pelajaran ini.
Apakah aku perlu pengalaman untuk memulai AWS for Backend Developers (EC2, S3, RDS, Lambda)?
Tidak diperlukan pengalaman sebelumnya. AWS for Backend Developers (EC2, S3, RDS, Lambda) di CoddyKit dirancang untuk pemula hingga pelajar tingkat lanjut, jadi kamu bisa memulai di sini atau dari awal dan belajar sesuai kecepatan kamu sendiri. Ini adalah pelajaran 3 dari 4.
Berapa lama pelajaran “Notifikasi Peristiwa S3” memakan waktu?
Sebagian besar pelajaran CoddyKit memakan waktu sekitar 5–10 menit. Setiap pelajaran ringkas dan interaktif, jadi kamu membuat kemajuan stabil dan melanjutkan dari tempat kamu tinggalkan di web dan aplikasi.
Bisakah aku menulis dan menjalankan kode dalam pelajaran AWS for Backend Developers (EC2, S3, RDS, Lambda) ini?
Ya. Setiap pelajaran AWS for Backend Developers (EC2, S3, RDS, Lambda) menyertakan editor kode bawaan, jadi kamu menulis dan menjalankan kode nyata langsung di browser dan mendapatkan umpan balik AI instan — tidak diperlukan penyiapan lokal.
Semua pelajaran dalam kursus ini
- Replikasi Lintas Wilayah S3
- Hosting Situs Web Statis S3
- Notifikasi Peristiwa S3
- Kebijakan Siklus Hidup S3 dan Kelas Penyimpanan