data loss when multiple call in one client

I loging when function fetch data into MongoDB (estimate data plain Json object is ~7MB)
I must prefer data to client (fetch products multiple condition stack card) and must call API 4-5 request at moment time

one call at one time cache will fine but stack call 4-5 request at one sometime some request will errors

Here is Error Cache when call .get
took time 0.8977ms (String is 44711 charectors)
Here is Complete Correct data
took time 101.0482ms (String 7357205 charectors))

Here Code
let GetProdCache = await ctx.redisGet(mongoDB_Prod_${storeuid})
if (GetProdCache) {
return JSON.parse(GetProdCache)
}
else {
let fetch = await products.findOne({ storeuid }).lean()
ctx.redis.setex(mongoDB_Prod_${storeuid}, 100, JSON.stringify(fetch))
return fetch
}

Environment

• Node.js Version: 12.18.4

• Redis Version: Redis server v=5.0.7 sha=00000000:0 malloc=jemalloc-5.2.1 bits=64 build=636cde3b5c7a3923

• Platform: windows 10 build 19041.746

Start with the Redis get/set calls shown in the issue and reproduce the behavior using several concurrent requests against the large JSON value. Done means concurrent cache reads return complete, parseable data without losing or truncating the stored value.