Hapi js validateFunc session param got null in some requests if i add keepAlive: true or update ttl in onPreResponse Middleware - hapi.js

Question

i upgrade hapi from version 16.1.0 to 20.2.1, and i had to replace catbox-redis package with #hapi/catbox-redis and hapi-auth-cookie package with #hapi/cookie (by using documentation https://hapi.dev/tutorials/auth/?lang=en_US#cookie)
also i remove the depricated hapi-acl-auth package and use the new hapi js feature scope to define roles access routes https://github.com/hapijs/hapi/blob/master/API.md#route.options.auth.access.scope
if the user stills browse on the website, i wanna update TTL option (cookie time to live) by using keepAlive: true option or by using the following middleware onPreResponse by using cookiesAuth option:
server.ext('onPreResponse', function (request, h) {
if (request.auth.isAuthenticated && request.path !== '/logout') {
request.cookieAuth.ttl(TTL);
}
return h.continue;
});
if i remove keepAlive: true, or the middleware, i can browse normaly in the website, but if i add them some of request redirect me to the '/login' page then to homepage
server.auth.strategy('session', 'cookie', {
cookie: {
name: 'cookie_name',
password: 'cookie_password',
ttl: TTL,
isSecure: true,
isHttpOnly: true,
},
redirectTo: '/login',
appendNext: true,
keepAlive: true,
validateFunc: async function (request, session) {
if(session && session.sid) {
try {
let cached = await cache.get(session.sid)
if (!cached || !cached.account) {
return { valid: false };
}
const user = await User.findByPk(cached.account.id, {
include: [
{ model: UserRole, as: 'Roles' },
{ model: EcRole, as: 'EcRoles' }
]
})
if (!user) {
console.log(`----------------------------------------------------------------------- ~ file: index.js ~ line 196 ~ redirect no user`)
return { valid: false }
}
user.scope = await getUserRole(user)
cached.account = user
return { valid: true, credentials: cached.account };
} catch (error) {
console.log(`----------------------------------------------------------------------- ~ file: index.js ~ line 204 ~ error`, error)
return { valid: false };
}
} else {
console.log(`----------------------------------------------------------------------- ~ file: index.js ~ line 210 ~ no session`)
return { valid: false }
}
}
});
by adding some console.log, i find that during the execution of some request, the param session of validateFunc got null value and i get the message 'invalide key'
and also it can be probleme of RedisCache timing during write & read data from cache between 2 requests