Private Proxies – Buy Cheap Private Elite USA Proxy + 50% Discount!Private Proxies – Buy Cheap Private Elite USA Proxy + 50% Discount!Private Proxies – Buy Cheap Private Elite USA Proxy + 50% Discount!Private Proxies – Buy Cheap Private Elite USA Proxy + 50% Discount!
    0
  •   was successfully added to your cart.
  • Home
  • Buy proxies
  • Extra features
  • Help
  • Contact
  • Login
  • 50% OFF
    BUY NOW!
    50
    PROXIES
    $19
    --------------------
    BUY NOW!
    BUY NOW!
    BUY NOW!
    BUY NOW!
    BUY NOW!
    $29
    $49
    $109
    $179
    $299
    --------------------
    --------------------
    --------------------
    --------------------
    --------------------
    PROXIES
    PROXIES
    PROXIES
    PROXIES
    PROXIES
    100
    200
    500
    1,000
    2,000
    TOP SELLER
    BEST VALUE
    For All Private Proxies!

The following Haskell code reads a Pandoc document from the DB and then serves it to the user after making a transformation, after the first run it is stored in memory via IORef State, inside a [(String, Pandoc)] so the document can be quickly looked up again, without hitting the DB or doing the transformation. I don’t feel like this code reflects that this is what is happening that well, there is a lot of handling Maybe‘s that I feel clouds the actual steps that make up this action.

module Api.ReadDocument (Route, action) where  import Control.Monad.Reader import Data.Aeson.Types import Data.Int import Data.IORef import Data.List import Database.Persist.Postgresql (ConnectionPool, fromSqlKey, runSqlPool) import Servant import Servant.Auth.Server import Text.Pandoc (Pandoc, def, readHtml, writeJSON) -- import Config import Queries import State import Types.DB import Types.Pandoc  type Route = "read" :> Capture "id" Int64 :> Get '[JSON] Pandoc  action :: IORef State -> ConnectionPool -> AuthResult Account -> Int64 -> Handler Pandoc action state pool (Authenticated _) id = viaCache state pool id action _ _ _ = throwAll err401  viaCache :: IORef State -> ConnectionPool -> Int64 -> Handler Pandoc viaCache state pool id = do   let key = show id   state' <- liftIO $   readIORef state   maybe (retrieve state pool id) (return . snd) $   find ((== key) . fst) (cached state')  retrieve :: IORef State -> ConnectionPool -> Int64 -> Handler Pandoc retrieve state pool id = do   doc <- runSqlPool (Queries.getDocumentFromId id) pool   maybe (throwError err404) (loadDocument state id) doc  loadDocument :: IORef State -> Int64 -> Document -> Handler Pandoc loadDocument state id doc = do   let key = show id       pd = transform . documentBody $   doc   _ <- liftIO $   updateState (CacheFile (key, pd)) state   return pd 

Previously this was one function, which contained nested case statements like so (pseudo code):

action state pool (Authenticated _) id = do   state' <- fromState state              -- get the state   case find id state of                  -- find the data     Just (_, doc) ->       return doc                         -- return cached document     Nothing -> do       doc <- getDocumentFromId id pool   -- get document from db       case doc of         Just d -> do           let doc = performOp $   d        -- perform computation on doc           _ <- saveToState state doc     -- save the document to in memory cache           return doc                     -- serve document         Nothing ->                       -- document not actually in DB           throwError err404 

This is obviously much more explicit but I didn’t like the nested case statements, and obviously there is a bit more to the code than what I have typed out here.

✓ Extra quality

ExtraProxies brings the best proxy quality for you with our private and reliable proxies

✓ Extra anonymity

Top level of anonymity and 100% safe proxies – this is what you get with every proxy package

✓ Extra speed

1,ooo mb/s proxy servers speed – we are way better than others – just enjoy our proxies!

50 proxies

$19/month

50% DISCOUNT!
$0.38 per proxy
✓ Private
✓ Elite
✓ Anonymous
Buy now

100 proxies

$29/month

50% DISCOUNT!
$0.29 per proxy
✓ Private
✓ Elite
✓ Anonymous
Buy now

200 proxies

$49/month

50% DISCOUNT!
$0.25 per proxy
✓ Private
✓ Elite
✓ Anonymous
Buy now

500 proxies

$109/month

50% DISCOUNT!
$0.22 per proxy
✓ Private
✓ Elite
✓ Anonymous
Buy now

1,000 proxies

$179/month

50% DISCOUNT!
$0.18 per proxy
✓ Private
✓ Elite
✓ Anonymous
Buy now

2,000 proxies

$299/month

50% DISCOUNT!
$0.15 per proxy
✓ Private
✓ Elite
✓ Anonymous
Buy now

USA proxy location

We offer premium quality USA private proxies – the most essential proxies you can ever want from USA

100% anonymous

Our proxies have TOP level of anonymity + Elite quality, so you are always safe and secure with your proxies

Unlimited bandwidth

Use your proxies as much as you want – we have no limits for data transfer and bandwidth, unlimited usage!

Superfast speed

Superb fast proxy servers with 1,000 mb/s speed – sit back and enjoy your lightning fast private proxies!

99,9% servers uptime

Alive and working proxies all the time – we are taking care of our servers so you can use them without any problems

No usage restrictions

You have freedom to use your proxies with every software, browser or website you want without restrictions

Perfect for SEO

We are 100% friendly with all SEO tasks as well as internet marketing – feel the power with our proxies

Big discounts

Buy more proxies and get better price – we offer various proxy packages with great deals and discounts

Premium support

We are working 24/7 to bring the best proxy experience for you – we are glad to help and assist you!

Satisfaction guarantee

24/7 premium support, free proxy activation and 100% safe payments! Best reliability private proxies for your needs!

Best Proxy Packs

  • 2,000 Private Proxies $600.00 $299.00 / month
  • 1,000 Private Proxies $360.00 $179.00 / month

Quick Links

  • More information
  • Contact us
  • Privacy Policy
  • Terms and Conditions

Like And Follow Us


Copyright ExtraProxies.com | All Rights Reserved.
  • Checkout
  • Contact
  • Help
  • Home
  • My Account
  • My Cart
  • News
  • Privacy Policy
  • Proxy features
  • Proxy packs
  • Terms and Conditions
Private Proxies – Buy Cheap Private Elite USA Proxy + 50% Discount!
    0 items