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dump the cache every 30 minutes and load at startup

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This commit is contained in:
Brian Gough 2016-03-04 11:58:37 +00:00
parent fdd9357a42
commit 8239bcd0b5
1 changed files with 21 additions and 0 deletions
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21
services/spelling/app/coffee/ASpell.coffee
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@ -2,8 +2,29 @@ async = require "async"
ASpellWorkerPool = require "./ASpellWorkerPool"
LRU = require "lru-cache"
logger = require 'logger-sharelatex'
fs = require 'fs'
cache = LRU(10000)
OneMinute = 60 * 1000
# load any existing cache
try
oldCache = fs.readFileSync "spell.cache"
cache.load JSON.parse(oldCache)
catch err
logger.log {err}, "could not load cache file"
# write the cache every 30 minutes
setInterval () ->
dump = JSON.stringify cache.dump()
fs.writeFile "spell.cache.tmp", dump, (err) ->
if err?
logger.log {err}, "error writing cache file"
fs.unlink "spell.cache.tmp"
else
fs.rename "spell.cache.tmp", "spell.cache"
logger.log {len: dump.length}, "wrote cache file"
, 30 * OneMinute
class ASpellRunner
checkWords: (language, words, callback = (error, result) ->) ->