◆ AI Learning · Hard rule

How does a developer restart a server correctly?

A server must restart after any file change. The server must run as a single instance. Multiple server instances can cause errors.

By Pawan Nayar · from the LLOS AI Learning record

The rule

A server must restart after any file change.

The server must run as a single instance. Multiple server instances can cause errors.

A developer must restart the server immediately after changing any server file. The developer must kill the server by its port number. The developer must verify the port is free. The developer must confirm only one server instance is running after the restart. Starting a server with `run_in_background:true` or `&` can cause it to stop unexpectedly. Individual PowerShell commands do not provide logs or verification. A developer should use a specific start script, like `start_llos.bat`, for reliable server operation. Before starting, a developer must check for and kill all old Python processes. A port showing as free does not mean the process is dead. Orphaned processes use computer resources silently. Each failed start attempt can leave an old process running.

A developer changes a server file but does not restart the server correctly. The developer starts five instances of the server. Most user requests go to the old server code. Users experience old limits and unexpected behavior.

Words you'll need

Resolved from this lesson's own record — real definitions, not invented for this page.

Resource Management

Deciding what computing power the AI actually needs

Fault Tolerance

System keeps working even when parts break

Distributed Systems

Multiple computers working together as one system

System Monitoring

Watching AI systems to catch problems in real time

Questions people ask

More from the same record, pulled by shared topic — not written new for this page.

How should a developer restart a server after making file changes?

A developer must restart the server after any file change. This makes sure the new code is used.

Why is the AI model slow or behaving strangely after a restart?

When a developer restarts an AI server, old processes might not stop. Each restart can add a new instance.

How does a developer restart a server process correctly?

A developer must always restart the server after any file change. The developer should never tell a user to run the server.

What problems happen when a developer does not have a good system to manage running services?

Servers can stop working without any error message. A user might only see a broken link.