fast-serialization | FST : fast java serialization drop in-replacement | Serialization library
kandi X-RAY | fast-serialization Summary
kandi X-RAY | fast-serialization Summary
up to 10 times faster 100% JDK Serialization compatible drop-in replacement (Ok, might be 99% ..). As an example: Lambda Serialization which came with 1.8 worked instantly. Android compatible since version >= 2.17 (use ``FSTConfiguration.createAndroidDefaultConfiguration()`` both on server and client side. The configuration object has to be passed into FSTObjectIn/Output constructors). OffHeap Maps, Persistent OffHeap maps. FSTStructs is very similar to IBM’s packed objects. Difference is: You can run it with Oracle JDK today. optionally en/decode any Serializable object graph to JSON (incl. shared references) (since 2.29) for interop. Apache 2.0 license since 2.17.
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Top functions reviewed by kandi - BETA
- Appends a tag
- Write primitive array
- Get cross - bin name for class
- Write class
- Creates the fields for the given class
- Get all declared fields of a class
- Find a derived method
- Create a field info object for a given field
- The main method
- Instantiates the given class
- Compress int array
- Instantiate an object
- Read a fixed length integer array
- Write the map
- Get a list of FieldInfo objects that have been removed
- Reads a primitive array
- Reads an array header
- Read a primitive array
- Write an object to the writer
- Reads an object header
- Returns binary keys iterators
- Read a long from the stream
- Write a long
- Write a tag
- Writes a compatible object to the output stream
- Initializes from a file
fast-serialization Key Features
fast-serialization Examples and Code Snippets
License : Strong Copyleft (CC BY-SA 4.0)
Copytype 'a t =
| A of 'a
| B of char
| C
| D of int * int
[@@deriving variants]
let matcher init = Variants.make_matcher
~a:(fun v (x1 : char) ->
(fun x -> x+1),Char.code x1)
~b:(fun v (x2 : int) ->
(jq --slurpfile fst first.json --slurpfile snd second.json -nc '
JOIN(INDEX($snd[]; .dvc_ssr); $fst[]; .dvc_ssr; add)
'
{"_time":"2022-02-20T23","csp_name":"1","tool_bf_id":"1234","dvc_ssr":"aa-1111","host":"hostIlet rec longest (nss: 'a list list) : 'a list =
match nss with
| [] -> raise (Failure "you entered an empty list")
| n::ns ->
let l = (longest ns) in
if List.length n > List.length l then n
else l
import qualified Text.Megaparsec as MP
import qualified Data.Text as T
import Data.List.NonEmpty (NonEmpty (..))
import Data.Void
annotateErrorBundle :: MP.ParseErrorBundle T.Text Void -> NonEmpty (MP.SourcePos, T.Text)
annotateErrorBuimport System.Random
import Control.Monad.Random
main :: IO ()
main = do
let stdGen = mkStdGen 2021
putStrLn $ fst $
runRand (fromList [("hello", 0.5), ("world", 0.1)]) stdGen
world
lemma "{fst x | x. x ∈ {(1::nat,2::nat),(2,4),(3,4)} ∧ snd x = 4} =
fst ` Set.filter (λx. snd x = 4) {(1::nat,2::nat),(2,4),(3,4)}"
unfolding Set.filter_def by blast
value "fst ` Set.filter (λx. snd x = 4) {(1::nat,2::nat),(2,4-- Takes in two lists and moves one non-zero int from one to the other
swap :: [Int] -> [Int] -> [[Int]]
swap xs ys
| xs == ys = [xs, ys] -- If both lists are all zeroes
| all (==0)-- > run (Lift (\x -> show x <> "!")) 1
-- "1!"
-- > run (Lift (\x -> show x <> "!")) [pi,pi]
-- "[3.141592653589793,3.141592653589793]!"
-- > run (Lift (1 +) `Comp` Lift fst) (100, "ok")
-- 101
-- dup a = (a, a)leftmostDeep : IntTree -> IntTree
leftmostDeep = fst . go
where go n@(Node _ Empty Empty) = (n, 0)
go n@(Node _ Empty r) = let (nr, dr) = go r in (nr, dr+1)
go n@(Node _ l Empty) = let (nl, dl) = go l in (nl, dl+let isNumeric (str: string) : bool =
let rec loop index =
if index >= str.Length then
true
else
let c = str.[index]
if (c >= '0' && c <= '9') || c = '.' || c = '-' thCommunity Discussions
Trending Discussions on fast-serialization
QUESTION
I have a graph algorithm that generates intermediate results associated to different nodes. Currently, I have solved this by using a ConcurrentHashMap (I am running multithreaded). So at first I add new results with map.get(node).add(result) and then I consume all results for a node at once with map.get(node).
However, I need to run on a pretty large graph where the number of intermediate results wan't fit into memory (good old OutOfMemory Exception). So I require some solution to write out the results on disk—because that's where there is still space.
Having looked at a lot of different "off-heap" maps and caches as well as MapDB I figured they are all not a fit for me. All of them don't seem to support Multimaps (which I guess you can call my map) or mutable values (which the list would be). Additionally, MapDB has been very slow for me when trying to create a new collection for every node (even with a custom serializer based on FST).
I can barely imagine, though, that I am the first and only to have such a problem. All I need is a mapping from a key to a list which I only need to extend or read as a whole. What would an elegant and simple solution look like? Or are there any existing libraries that I can use for this?
Thanks in advance for saving my week :).
EDIT
I have seen many good answers, however, I have two important constraints: I don't want to depend on an external database (e.g. Redis) and I can't influence the heap size.
ANSWER
Answered 2019-Mar-15 at 13:07My recollection is that the JVM runs with a small initial max heap size. If you use the -Xmx10000m you can tell the JVM to run with a 10,000 MB (or whatever number you selected) heap. If your underlying OS resources support a larger heap that might work.
QUESTION
I am working with Redis(via redisson) I have a DTO class that I am serializing an deserializing into Redis,
the codec I am using is:
org.redisson.codec.FstCodec
when I move the class to a diffrent namespace despite setting the: serialVersionUID explicitly in the DTO class in class I get the following exception:
...ANSWER
Answered 2019-Jan-21 at 10:28when I move the class to a diffrent namespace despite setting the: serialVersionUID explicitly in the DTO class in class I get the following exception:
You can't deserialize object if its package or class name has changed.
The way I am currently handling it is by serializing of the object using json and then setting it into redis
You could set Redisson to Jackson as follow codec = org.redisson.codec.JsonJacksonCodec
QUESTION
I just want to preface that I'm new to socket serialization and before downvoting please suggest what I can add to edit in. I've tried to break code down as small as possible as the project is pretty large.
I'm trying to a create a very simple RPC type middleware where client can invoke methods on server and retrieve object back if the method make such an object. I'm using FST-Serializer library to serialize my object and send them over the network/socket.
While I've gotten it up and running, I have found a very weird issue where the performance of serialization slowdown significantly when this occurs (code examples below):
...ANSWER
Answered 2018-Mar-01 at 20:43Nagle's algorithm can slow down a connection significant if it not performing a request/response action. I have seen it wait 40 ms for another block of bytes to coalesce into a packet.
I suggest you try turning it off if you are streaming data without a reply.
QUESTION
I would like to use a GitHub repo inside a Script I'm writing. The Script will run inside an application which requires that the Script has minimal dependencies. By this I mean it can have a dependency on a standalone .jar or library, but not on one that has further dependencies. This is a security measure. My Script needs to have a dependency on a GitHub project, but that project also has its own dependencies. Is there any way to compress that GitHub project and its chain of dependencies into one standalone library or .jar?
I'm using IntelliJ (most recent version) if that helps. The GitHub project I need to use can be one of the following:
https://github.com/RuedigerMoeller/fast-serialization
https://github.com/EsotericSoftware/kryo
I need it to serialize and deserialize large object structures very quickly and frequently, otherwise my program doesn't operate on current data.
EDIT: So I did solve this issue, the solution was to use the Maven Shade plugin to compile an uber or fat .jar of the Maven project. This allowed me to bypass the security measure.
...ANSWER
Answered 2017-Dec-25 at 17:58Having a dependency on a GitHub repo is having a source dependency (which might declare itself binaries dependencies in its own repo).
You would need to fork that repo, and transform its maven project in order to generate a fat jar (with for instance the Shade plugin).
And you would need to publish that new artifact to an artifact repository (like your own Nexus) in order for your project to depend on it.
QUESTION
I am using this library for my mobile application, but when I try to create a signed APK with ProGuard enabled (release configuration) it gives me thousands of errors like these:
...ANSWER
Answered 2017-Aug-26 at 13:44I've fixed it using the following proguard rules
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install fast-serialization
master contains dev branch/trunk.
1.x contains old version
The maven build should work out of the box and reproduces the artifact hosted on maven.org
To use the gradle build, you need to configure the proxy server in settings.properties (or just set empty if you do not sit behind a proxy).
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