Youtube comments of Metalstorm (@M3t4lstorm).

  1. Seems like a mixing of terms, this is more a reverse proxy than a load balancer (a reverse proxy can load balance - DNS roundrobin etc). Nginx is one example and is one of if not the most common. This does have an interface out the box though.
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  2. It's so simple that almost everyone does REST wrong
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  3. SO is just a glorified forum, forums have been around for decades and are are mostly just CRUD operations. There is no real-time'iness about it, no huge amounts of data (think IoT, streaming, personalization/suggestions, etc). There doesn't seem to be any integrations with other large systems (CRMs, data warehouses, BI, ML, etc). They don't protentially lose large amounts of money if a number of users can't login/create a post. It's extremely read heavy, that's the easiest to design for. They are not dealing with financials/transactions/money, if something is out of date or data is slightly wrong it doesnt matter. SO still has downtime/maintenance basicslly every week or so, i wonder why...it's a sinple architecture because its a simple system.
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  4. Notes: - The SQL query at 20:27 would not work for the same reasons you mentioned previously in the video (prime meridian + equator). - You assume that the long/lat is the centre of the business/place, if users are able to add their own businesses this will probably not be the case - Businesses/places can span multiple grids (think of shopping malls) - Businesses/places can be bigger than a grid (think of airports) - At the very end you say it would "use the long/lat to rank the businesses and return to the client" (sorting), you also need to check if the business is still within the radius the user specified (filter); just because the business is in the same grid/neighbouring grids doesn't mean its within the radius they asked for. The first thought might be to make the geohash a list (of all the grids that it covers), but how do you calculate that? You would need a polygon (a long/lats for each vertex) that covers the (rough?) area of the business/place, then you get onto the trouble of validating that :)
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  5. override __format__(format_spec: str) on the class and you can do anything you want, like: f"{something:customformat}"
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  6. Sure if you don't implement it properly, but that goes for everything, so...
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  7. How would GQL differ from a security perspecific than any other HTTP based API...
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  8. If the keys are deleted as soon as the message is decrypted, how do you read messages from a long time ago? Are they encrypted on disk using a different mechanism?
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  9. Tell me you don't know what a JWT is without telling me you don't know what a JWT is 😉
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  10. There isn't any security issues putting roles and permissions in a JWT.
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  11. This is not a production app ;)
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  12. Would have liked it to be a bit more in-depth and technical, was too high level.
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  13. This kind of 'security' doesn't even belong in the API layer, so yes GQL can
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  14.  @biomorphic  Revoke the JWT. Put the clients IP in the JWT and validate it on the server side. Sorted, not difficult.
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  15.  @marcioaso  some pretty bad takes, ofcourse the FE wants to know what permissions the users has, if the user doesn't have the 'delete X' permission then you hide/disable the button that the user would click to 'delete X'. The API that actually 'deletes X' should be the thing validating that the user has that permissions. I don't think anyone in this thread has said that the permissions should be enforced/checked/validated in the FE...that would obviously be silly because it's easily bypassed, trust nothing from the FE, only server-authoritative, etc. A JWT is not a cookie, both literally and figuratively, so that whole section is basically moot. Also, a lot of people are assuming the client is a web browser, sure most of the time it is, but the same principles/architectures are used when the client is something else, like another application, service, CLI, a 'raw' request from something like CURL.
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  16. It might be worth talking about the actual connection topology (peer-to-peer or client-server-client). I would be interested to know if the client received scaled video when the video on their screen is physically small (like when lots of people in a group chat all have their webcams on).
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  17. You know performance isn't the number 1 priority of a microservice architecture right? Nor is a deciding factor if you should use MS or not
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  18.  @ihateidiots9484  Sounds more like a bad Dev team/system design.
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  19. Earlier keys = more time in game = more 'cost' to support you as a player (server cost, support, etc), paying an extra $10 for an extra 1 or 2 months isn't massive, and $100 for ~8 months of game time ($15/month) isn't too bad either compared to other MMOs. However, it depends how much content/game there is in those months to play.
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  20. Disagree on most of this video, and is outright wrong at times, maybe because its such a high level video at only 4 minutes? It also seems all over the place in terms of concepts, there doesn't seem to be any logic over what topics are picked; over concepts much more akin to MS architectures like eventual consistency, 2-phase commit, actor pattern (workers), async vs sync (basically you are now introducing a depenacy on the network/timing/order on almost anything you do, which in a monolith you don't normally have to). Also microservces shouldn't "communicate with each other" that itself is too much coupling and against the goal. This format works well for small discrete topics like algorithms, but not for these large scale software architectures as there is just to many rabbit holes and information to cover.
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  21. Firing thousands of rounds at shadows in the fog on a muddy and wet western front for hours on end in service of your country, fighting for your life through every passing minute takes a permanent toll on a soul.
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  22. Anyone else notice the plumbus?
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  23. Should really be worded as, "all light switches start as off", "the light switch is toggled", not "the first person turns ON every light switch"
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  24. This has been known for decades
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  25. Padlocks
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  26. If you get the First wave key, you will have access for alteast 8 months based on their diagram, which is $15/month, which is the same as basically every other popular/big MMO. It doesn't give you the access to the final game as well because the final game is also a subscription. 50 cents/day to play a game (in some form or another) doesn't seem like a big issue.
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  27. You can also put the client's IP (as seen by the server) in the JWT when creating it. Validate it just as you would the signature, issuer etc. Any attacker getting ahold of the JWT would have to perform the attack from the client's network, rather than sending it back to a Command and Control server/their network.
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  28. Remember: A higher temperature on the outside can actually mean they are performing worse.
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  29.  @ihateidiots9484  they are obviously doing it wrong if those are the kind of problems you are seeing. I am speaking from a lot of experience in this field.
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  30. Does the pointy bottle shape have a big impact/specific function?
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  31. Imagine that, using the wrong tech causes huge problems and a huge bill.
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  32. Nice little paradox - when you are scaled down to the size of an atom, how big are the atoms that make up you.
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  33. Doesn't the original question say "cable" not "rope" (technically there is a difference). It also does not say what the cable is made out of or how thick it is. If it is as light (and thin) as possible, then it could be as good a parallel to the ground when moving forward. It also matters how fast the helicopter is moving, average helicopter speeds is around 150mph with a max of 300mph.
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  34. Did you load test it?
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  35. "either way is acceptable" - Don't use recursion, you'll use more memory and can hit max stack depth in large lists
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  36. Laughs in 128GB of RAM
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  37. Fat payday
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  38.  @marcioaso  because you reply with one thing and then get replies and then you edit your message greatly. Which yes, is your responsibility 😉
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  39. "Don't shut off" ... switch is in the off position :)
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  40. The old resource triangle, with Tesla (or any good EV) you trade time to recharge, for cost of fuel. Quoting Tesla it costs 1/7 in fuel for the same mileage.
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  41. Every system architect is cringing at this.
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  42. Now just make one that drops 1k, then 10k, then 100k at once and beat the record.
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  43. Braided wiring sleeving + Cloth fabric tape + heat shrink to sort the cabling out
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  44. You need more outtakes, they could be a great video in themselves :)
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  45. Hanlon's razor, strongly on the malic side
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  46. Both detectives are incompetent
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  47. The emails might just be delayed and your email in the queue only got processed an hour(s) after the button was pressed. They have massive amounts of emails they need to send around the world's, for different platforms/tools/products etc.
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  48. Imagine that, bad architectures and using the wrong tools for the job results in a bad system and costing a silly amount of money...
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  49.  @henson2k  yup, it's like some system designers can't do basic maths...
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  50. The EU is not Europe and it's not a country...
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  51. Only a few? Literally 1000's of companies follow microservices (or at least try to). For large corps, sure legacy stuff might be monolithic, that's not because monolithic is better, it's just that changing an enterprise system once it's been in prod for many years to anything else is a massive amount of work. Anything in the last 5 years or so (of a decent scale) will more than likely be microservices (again, at least try to).
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  52. What? No.
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  53. Called it 😉
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  54.  @fxfighter  ye then you need to rack it, maintain hardware backups, redundant locations (different countries at least - currencies, tax, processes, laws, etc), pay someone to manage and maintain all of this security/vulnerabilities, networking, storage, patching, etc...infra engi easily 50k+ a year.
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