Module sessions 

Session management for What framework

Provides session storage with pluggable backends:

• SQLite (default, for local development and single-server deployments)
• Cloudflare Workers KV (for globally distributed, durable sessions)

Structs

KvSessionStore

Session store backed by Cloudflare Workers KV via REST API

Session

Session data structure

SqliteSessionStore

Session store backed by SQLite with connection pooling. Uses r2d2 for concurrent reads and spawn_blocking to avoid blocking the async runtime.

Enums

AtomicMutation

Atomic session mutation operation — used by the server to apply mutations at the SQL level

SessionBackend

Pluggable session storage backend

Constants

CSRF_TOKEN_KEY

Reserved session key for the CSRF token

Functions

apply_mutation_in_memory

Apply a mutation to in-memory session data (used for KV fallback and testing).

build_clear_session_cookie

Build a Set-Cookie header that expires the session cookie (used on logout).

build_session_cookie

Build Set-Cookie header value

generate_csrf_token

Generate a cryptographically secure CSRF token Returns 64 hex characters (32 bytes of random data)

generate_session_id

Generate a cryptographically secure session ID Returns 128 hex characters (64 bytes of random data)

parse_session_cookie

Parse session ID from cookie header