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While this loads — worth knowing
ElastiCache RedisnotElastiCache Memcached
Redis has data structures — sorted sets, counters, pub/sub. Memcached has plain keys and nothing else.
Loading…
While this loads — worth knowing
Redis has data structures — sorted sets, counters, pub/sub. Memcached has plain keys and nothing else.
PlayCloudLabs
Reading about AWS and designing with AWS are different skills, and the exam asks for the second one. Here you read a scenario, build the architecture on a canvas, and get it marked — a percentage against what the brief requires, the reason behind every requirement, and a written review of the design you actually drew.
How it goes
1. Learn the service
What problem it solves, how it works, how it fails, what it costs you, and what it gets mistaken for.
2. Learn the shape
The 16 architectures most briefs turn out to be, and the phrases in a brief that point at each one.
3. Design it
Place the services on a canvas and wire them together. Multiple choice, fill the gaps, or a blank canvas.
4. Get it marked
A percentage against the brief, the reason behind every requirement, and a written review of your design.
5. Do it again
Every attempt is kept, so you can see which kind of scenario you keep losing marks on.
29 service pages, each running from the problem the service solves to the traps an exam sets about it — how it works, how it scales, how it fails, how it is secured, how it is charged, and which service it is most often confused with. Every fact is checked against AWS’s own documentation, and each page lists the pages it was checked against. All of it is free to read while it is being written.
A few to start with
Almost every brief — here, in an exam, and at work — is one of 16 shapes with the names changed. Each page says when the shape is the right answer, the phrases in a brief that point at it, the services it runs through, and what it costs you. Nothing has only upsides.
40 scenarios, written the way an exam writes them: a business with a problem, the constraints it is under, and no mention of which services answer it. Three ways to answer, and the same scorer behind all three.
The reference design is drawn for you with holes in it. Pick the option that fills them. Right or wrong, with the author’s note on every option once you have answered.
The same holes, but you drag the right service into each one. Each gap earns its own share of the marks, so a design that is half right is marked half right.
A blank canvas and the whole service palette. Marked on the services, the connections between them and their direction — and you get the model answer beside your own.