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So I wrote a wrapper for The Movie DB (tmdb.org) so you can easily and efficiently query for tv show and movie data. It wraps pretty much the entire, very mature REST/json API as an object model so it's enormous.
Anyway, the neat thing about it is how it caches.
The entire object model backs its state on a normalized graph that maps directly to JSON.
it queries tmdb.org as necessary to fill in the bits of the graph it doesn't already have.
so it keeps the entire cache as one large (normalized) "JSON" object graph.
The normalization just means parsing the json into (null),string,bool, int,long,bigint, double, IList<object> and IDictionary<string,object> types and then nesting those to make the graphs.
I say graphs because the way the cache works, everything is connected, and you might have a node connected by more than one "parent" so that data isn't so duplicated.
Anyway, that caching and state backing thing could use its own article.
But it's a technique, not a separate code library.
Should I publish a Tip & Trick entry with just the caching aspect of the TmdbApi explored, or do you have better ideas?
Object graph: Simply objects nested inside objects using dictionaries and lists.
(Apparently graph databases are a thing. I did not know that.)
When I was growin' up, I was the smartest kid I knew. Maybe that was just because I didn't know that many kids. All I know is now I feel the opposite.
modified 1-Sep-19 14:29pm.
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I think most people here don't even have a clue what a graph database is and probably think it has to do with graphics, so it would be a good thing to explain that first 
Here some Graph databases are mentioned: best-graph-databases-suited-for-big-data[^]
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i didn't know a graph database was a thing as such. i'll edit my comment.
i was just talking about an object graph. but i suppose that's what a graph DB would hold.
When I was growin' up, I was the smartest kid I knew. Maybe that was just because I didn't know that many kids. All I know is now I feel the opposite.
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I've used neo4j and would recommend it if you use Java. They have a really good intro article to the topic too - What is a Graph Database?[^] 
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this one is all in C#. It's not really a full fledged DB.
It's simplistic but good for what i needed it to do.
Literally all the "indexers" are are just thinly wrapped Dictionary<string,object> instances.
Each Dictionary<string,object> is a JSON object. Each List<object> is a JSON array. The scalar values for object can be numeric, string, boolean or null, just like JSON, but they can also be more lists and dictionaries.
It all maps directly. It's so easy it's stupid, but smart enough to work.
When I was growin' up, I was the smartest kid I knew. Maybe that was just because I didn't know that many kids. All I know is now I feel the opposite.
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I've heard of it, but it's overkill for this. If this was serving json rather than consuming it I'd consider it, but all i need is simple caching.
When I was growin' up, I was the smartest kid I knew. Maybe that was just because I didn't know that many kids. All I know is now I feel the opposite.
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Neo4j is quite interesting: it runs on Java. The free book is very well-written.
«Where is the Life we have lost in living? Where is the wisdom we have lost in knowledge? Where is the knowledge we have lost in information?» T. S. Elliot
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honey the codewitch wrote: Anyway, that caching and state backing thing could use its own article.
But it's a technique, not a separate code library.
Should I publish a Tip & Trick entry with just the caching aspect of the TmdbApi explored, or do you have better ideas?
It sounds like it would fit better as an Article than as a Tip (unless I'm overestimating the amount you can write about it). But it doesn't matter that it's a technique instead of a code library... there's no problem whatsoever with writing an article about a technique.
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This could become a very valuable CP article.
«Where is the Life we have lost in living? Where is the wisdom we have lost in knowledge? Where is the knowledge we have lost in information?» T. S. Elliot
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I wonder how many services out there expose their APIs as JSON (content-type: application/json) over HTTP REST?
If so, I might have a dynamic, (read-only) caching entity framework for querying such a monster.
All of the really cool stuff though - like the automatic paging is very service specific regardless.
When I was growin' up, I was the smartest kid I knew. Maybe that was just because I didn't know that many kids. All I know is now I feel the opposite.
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For a new vernier caliper - the cat has damaged mine - and I'm in two minds if I want a new-fangled digital, or stick with the traditional "true" vernier.
I find a good 'un:
Material: Carbon Steel Excellent!
Measuring range: 150mm Perfect
Measurement accuracy: 0.02mm I'd prefer .01mm, but 2 / 100ths is fine.
Note:
Please allow 0-2cm error due to manual measurement. Thanks for your understanding. Hang on, hang on. You sell vernier calipers - the accurate way to measure things - and you can't get a closer tolerance than 0-2cm? 
What are they teaching the Youth of Today? 
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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OriginalGriff wrote: What are they teaching the Youth of Today?
Probably the same stuff as our QA students get to learn. The recent question from a "teacher" was a case in point.
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Just legal-speak I'm sure.
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As in "use of this tool can result in finger blisters, broken nails, myopia, and, possibly, death"?
It seems to work OK for the drug companies, so you're probably right.
I wanna be a eunuchs developer! Pass me a bread knife!
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Once you are used to it, they are really easy: and the battery never goes flat in the drawer ...
I'm thinking of getting a 3D printer for Christmas from Herself, so I'm looking at CAD packages and for that I need to measure stuff to design holders and so forth. Calipers are the way to do that, and to check manufacturer diagrams, where you can get them.
A little care and you can read 1/100th of a mm very easily and accurately. Or 2/73rds of an inch-pound/per gallon, if you prefer Imperial / Whitworth.
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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I got an iGaging digital a few months ago and really like it.
Technician
1. A person that fixes stuff you can't.
2. One who does precision guesswork based on unreliable data provided by those of questionable knowledge.
JaxCoder.com
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its burning ...you won't find much....
Caveat Emptor.
"Progress doesn't come from early risers – progress is made by lazy men looking for easier ways to do things." Lazarus Long
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I'm mostly curious about how the cat managed to damage your old one?
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I'd like to know that myself. Also why.
But alas, the jaws are no longer parallel, so they are no longer accurate.
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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How do you know it's the cat?
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