Session management in Supabase - Step-by-Step Execution

Process Flow - Session management

User logs in

↓

Supabase creates session

↓

Session stored in client

↓

User makes requests

↓

Session token sent with requests

↓

Supabase verifies session

↓

Access granted or denied

↓

User logs out or session expires

↓

Session cleared

This flow shows how a user logs in, gets a session from Supabase, uses it for requests, and how the session ends.

Execution Sample

Supabase

const { data, error } = await supabase.auth.signInWithPassword({
  email: '[e-mail]',
  password: 'password123'
});

const session = data.session;
console.log(session);

This code logs in a user with email and password, then stores the session returned by Supabase.

Process Table

Step	Action	Input	Supabase Response	Client State
1	User calls signInWithPassword	{email: '[e-mail]', password: 'password123'}	Success with session token	Session stored in 'session' variable
2	Client stores session	Session token	N/A	Session saved locally for requests
3	User makes authenticated request	Request with session token	Verified session, access granted	Session remains valid
4	User logs out	Logout call	Session revoked	Session cleared from client
5	User makes request after logout	Request without session	Access denied	No session present

💡 Session ends when user logs out or session expires, stopping authenticated access.

Status Tracker

Variable	Start	After Step 1	After Step 2	After Step 4	Final
session	null	session token object	session token object	null	null

Key Moments - 3 Insights

Why does the session variable become null after logout?

Because the logout call revokes the session on Supabase and clears it locally, as shown in execution_table step 4.

What happens if a request is made without a session token?

Supabase denies access since no valid session token is sent, as shown in execution_table step 5.

How is the session token used during requests?

The session token is sent with each request to verify the user’s identity, shown in execution_table step 3.

Visual Quiz - 3 Questions

Look at the execution table, what is the client state after step 2?

A Session saved locally for requests

B Session cleared from client

C No session present

D Session revoked

💡 Hint

Check the 'Client State' column in row for step 2 in execution_table.

At which step does the session variable become null?

A Step 1

B Step 2

C Step 4

D Step 3

💡 Hint

Look at variable_tracker for 'session' variable changes after each step.

If the user tries to make a request after logout, what will Supabase respond?

A Access granted

B Access denied

C Session renewed

D Request ignored

💡 Hint

See execution_table step 5 for Supabase response after logout.

Concept Snapshot

Session management with Supabase:
- User logs in with signInWithPassword
- Supabase returns a session token
- Client stores session for authenticated requests
- Session token sent with each request
- Logout clears session and revokes access

Full Transcript

Session management in Supabase starts when a user logs in using their email and password. Supabase returns a session token that the client stores locally. This token is sent with every request to prove the user's identity. Supabase checks the token and grants or denies access accordingly. When the user logs out, the session token is revoked and cleared from the client, stopping further access. If a request is made without a valid session, access is denied.