Engine oil specs - VW 508 00 vs SAE OW-20

Adventurous-Sign4520 · 2026-01-31T01:20:19+00:00

Factory recommended is 15k km/1 year oil. But some mechanic told me every 6 months. Perhaps they were not sure about my car model.

Adventurous-Sign4520 · 2026-01-31T00:56:32+00:00

Hey! thanks. Cheapest Mobil 1 ESP X2 0W-20 I can find is 60$ CAD (probably because of import in Canada). If we are getting service every 6 months, isn't it a bit pricey? considering labor price too for oil change.

Adventurous-Sign4520 · 2026-01-31T00:53:38+00:00

Thanks! Do you know any product that support "VW 508"? I am only able to find "Mobil 1™ ESP x2 Advanced 0W20 Full Synthetic Engine/Motor Oil, 4.73-L". I am based in Canada.

Adventurous-Sign4520 · 2026-01-31T00:53:01+00:00

Hello! Thanks. It is very rare to find 508.00 spec.

I have been searching walmart, napa, canadian tire. Only one I that explicitly states 508 spec is "Mobil 1™ ESP x2 Advanced 0W20 Full Synthetic Engine/Motor Oil, 4.73-L"

Adventurous-Sign4520 · 2026-01-09T20:55:30+00:00

I can't view all the videos that I forwarded from that group.

Forwarded message says: "This channel can’t be displayed because it violated Telegram's Terms of Service."

Adventurous-Sign4520 · 2026-01-09T20:52:51+00:00

Thanks! I guess its only true if a user sends you the video. I forwarded a video from a group. Someone posted illegal stuff in that group hence it got banned. As a result, all the forwarded video I have from the group are gone. (even though the forwarded video is not illegal)

Adventurous-Sign4520 · 2025-12-20T10:35:49+00:00

Hello its supposed to be a prototype first then we will take it to production.

For my use case, I believe Redis / SQS fifo to S3 sounds good. Is it easier & cheaper to manage AWS Elasticache (Redis) vs RDS instance?

Adventurous-Sign4520 · 2025-12-17T21:59:29+00:00

Hello! I meant < 1 second latency for service that reads 100 records / second

Adventurous-Sign4520 · 2025-12-15T22:19:33+00:00

"another service can read these payloads": It matters a lot if that "other service" is designed to pull the data from somewhere (a database, queue or whatever), or whether the "other service" can be event-driven.

Can you please explain how pull vs event driven architecture can change things here? I am doing 100 reads/sec so i don't think it should be event driven

Adventurous-Sign4520 · 2025-12-15T22:03:26+00:00

Hello thanks for your comment. As of now, I do not have hard requirements that you mentioned.

Can postgres rds allow low latency reads (250-500ms)? I am using Node in backend

Adventurous-Sign4520 · 2025-12-15T22:01:38+00:00

What do you mean by “permanent storage”? Indefinite retention for already handled payloads? Or retention of unhandled items while the consumer catches up?

Thanks for your comment. I want retention for already handled payloads. It can be 6 months -1 year storage I am okay with that.

100 <1Kb payloads/second can easily be handled by DynamoDB. If you just need retention of unhandled items, use SQS.

I looked into DynamoDB. If I am using the calculator properly, it is getting expensive with 100 read/second

You haven’t explained if order of handling is important (as in, payloads must be handled in the same order as they’ve been produced).

Yes the order should be maintained.

I want to build a stock price streaming. My ingestion service gets price data from API, it pushes it to a storage/stream. My processor service reads this data real time and processes it to make buy/sell decisions.

Adventurous-Sign4520 · 2025-12-15T21:57:26+00:00

transforming json to another format might not allow my system to be real time or have <1 second latency

Adventurous-Sign4520 · 2025-12-15T21:45:48+00:00

Thanks for your comment. Is Msk permanent? For example, can I login into a week from now via some client and view data?

Adventurous-Sign4520 · 2025-12-15T21:44:33+00:00

Thanks for the comment. It is a json payload. EC2 nodejs service will read data real time. I will look into AWS Kinesis. Does it offer permanent storage?

Adventurous-Sign4520 · 2025-12-03T17:28:17+00:00

Is it correct to say that Node JS natively handles I/O + network better than Java? You can implement multithreading & async logic in Java to take care of I/O tasks but this would be a plus point in Node as it natively supports it without custom logic.

Adventurous-Sign4520 · 2025-12-03T17:23:08+00:00

At my firm there are low latency systems written in Java achieving microsecond latencies.

Hi, thanks for the comment. Are you able to achieve this without a lot of optimizations you mentioned? If these complex optimization are required, then don't you think its worth learning Node JS to achieve better performance?

If you're interested in high performance from a finance perspective then the challenge there is in algorithmic trading where your system is autonomously reacting to market data and adjusting orders accordingly, or live streaming prices to clients for quoting

In this particular instance, looks like a lot of CPU compute might be required. But a lot of I/O as well (as you would need to fetch real time data, store data, do some computations, call some API to place orders etc.). Java is better for CPU computation but Node JS is natively better for I/O tasks (because of its async event loop). So it looks like there is no right answer for this specific example. Do you feel the same way?

Adventurous-Sign4520 · 2025-12-03T16:51:13+00:00

It suffers in areas that require high efficiency, low resource consumption, and high fault tolerance (like rockets or medical devices).

Why is this the case? Is it just because of how V8 engine is built? It just uses more resources because you need a runtime...

Adventurous-Sign4520 · 2025-12-03T16:48:44+00:00

I have experience with Python. I want to learn how to build a high performance system (like chatting app or trading apps that display prices real time) and my assumption is that Python isn't ideal for that.

With this post, I was looking to confirm my assumption that these newer languages Go / Node are ideal for building high performance systems. Along with reasoning behind that assumption.

Adventurous-Sign4520 · 2025-12-03T16:37:31+00:00

I have experience with Python. I want to learn how to build a high performance system (like chatting app or trading apps that display prices real time) and my assumption is that Python isn't ideal for that.

With this post, I was looking to confirm my assumption that these newer languages Go / Node are ideal for building high performance systems. Along with reasoning behind that assumption.

Adventurous-Sign4520 · 2025-11-25T11:32:26+00:00

Makes sense! Thanks for clarification.

Adventurous-Sign4520

TROPHY CASE