Alternative to Short Polling

 The best alternative to short polling depends on who needs to talk (just the server, or both) and how often the data changes.

Here are the three industry-standard alternatives:

1. Long Polling (The "Bridge" Solution)

Long polling is the closest relative to short polling but much more efficient. Instead of the server saying "No" immediately, it holds the request open until data is ready or a timeout occurs.

  • How it works: Client asks $\rightarrow$ Server waits until the PDF is processed $\rightarrow$ Server responds $\rightarrow$ Client immediately asks again.

  • Best for: Tasks that take a variable amount of time (like AI processing) where you want to reduce empty network traffic.

  • Pros: Easy to implement; works everywhere (no special protocols).

2. Server-Sent Events (SSE) (The "Streamer")

SSE allows the server to push updates to the client over a single, long-lived HTTP connection. It is unidirectional (Server $\rightarrow$ Client).

  • How it works: The client opens one connection, and the server "streams" text updates (e.g., "Page 1 done", "Page 2 done", "Final JSON ready").

  • Best for: Status dashboards, news feeds, or showing "live" AI extraction progress.

  • Pros: Automatically reconnects; very lightweight; uses standard HTTP.

3. WebSockets (The "Phone Call")

WebSockets provide a bidirectional, full-duplex connection. Both the client and server can send data at any time without a new request.

  • How it works: A "handshake" upgrades the HTTP connection to a permanent tunnel.

  • Best for: Real-time chat, multiplayer games, or highly interactive tools.

  • Pros: Lowest latency; most powerful.

  • Cons: Overkill for simple PDF extraction; requires more server memory to keep thousands of "tunnels" open.

Summary Comparison Table

FeatureShort PollingLong PollingSSEWebSockets
DirectionClient $\rightarrow$ ServerClient $\rightarrow$ ServerServer $\rightarrow$ ClientBidirectional
ConnectionMany short onesFewer, held openOne persistentOne persistent
LatencyHigh (wait for next poll)LowVery LowLowest
Server LoadHigh (constant hits)MediumLowMedium/High
ComplexityVery LowLowMediumHigh

Comments

Post a Comment

Popular posts from this blog

How to enable Google Sheet in Google Cloud project

Image
 Hi, In this post, we will see how to enable Google sheet APis in Google Cloud project. Go to Google Cloud Console: Visit: https://console.cloud.google.com/ Make sure you're in your project Navigate to APIs & Services: Go to "APIs & Services" > "Library" (or use the search) Enable Google Sheets API: Search for "Google Sheets API" Click on it Click "Enable" Wait a few minutes: After enabling, wait 1–2 minutes for the change to propagate. Thank you.
Read more

Finding Your Redis Credentials: Host, Port, and Password

 Finding Your Redis Credentials: Host, Port, and Password Here is how to hunt down your Redis credentials in seconds. 1. The Host: Where is Redis living? In 90% of local development scenarios (including WSL), Redis lives right on your machine. Standard Local Host: 127.0.0.1 or localhost Remote Server: If you're connecting to a staging or production server, you will need that server's specific IP address or domain name (e.g., redis.example.com ). 2. The Port: Which door is open? The default port for Redis is 6379 . However, if you're running multiple instances, it might be different. To confirm exactly which port your instance is listening on, run: redis-cli CONFIG GET port Alternatively, you can ask your system which process is "squatting" on the network: sudo ss -tlnp | grep redis If you see 0.0.0.0:6379 , you're using the default. 3. The Password: Is the gate locked? By default, a fresh Redis installation has no password . In a local environment, this is ...
Read more

Ways to install your own extension

 In visual studio  Extension Manager ,  shows extensions from the Marketplace. But you can install your own .vsix extension manually — here’s how: 🛠️ Ways to install your own extension Double‑click the VSIX file : After you build your extension project, Visual Studio produces a .vsix file. Just double‑click it, and the Visual Studio Installer will open to install it. Use the Experimental Instance : When debugging your extension, Visual Studio launches a special “Experimental Instance” where your extension is auto‑installed for testing. Command line install : You can use VSIXInstaller.exe (included with Visual Studio) to install your extension manually. Example:                          VSIXInstaller.exe MyExtension.vsix Local install via Extensions menu : In newer Visual Studio versions, go to Extensions → Manage Extensions → Install from VSIX… and select your file.
Read more