For per cell TTL, see https://issues.apache.org/jira/browse/HBASE-10560
Cheers
On Apr 13, 2014, at 11:06 PM, Li Li <fancye...@gmail.com> wrote:
> hi all
> I want to use hbase as a global cache. I need some advice .
> getFromCache(String key){
> get from hbase;
> if exist return result;
> value="working...";
>
> boolean res=checkAndPut;
> if(res){
> value=doWork(key);
> Put(key, value);
> }else{ //some other thread is doing work now
> //sleep a while and retry
> for(int i=0;i<MAX_RETRY;i++){
> sleep;
> get value from hbase
> if(value!="working...") return value;
> }
> //some thing wrong happens such as working thread crash
> //do it myself
> value=doWork(key);
> Put(key,value);
> return value;
> }
> }
>
> btw, hbase has TTL for column family. is it possible to set ttl
> per row/cell?
