Can you provide a pointer for more information related to distributed cache implementation? Thanks, Mike
Rodrigo Ruiz <[EMAIL PROTECTED]> wrote on 07/10/2006 11:22:01 AM: > Depending on the servlet container you are using, war archives may be > considered read-only. In this case you will not be able to write a file > within the application context. > > Some alternatives you have are: > > - Deploy your application as an "exploded war" (the exact name will vary > from container to container). When deploying in this mode, your classes > can write files at any location within your context. > > - Use an absolute path for your file. The path may be configured through > JNDI, or System properties, or you might put it into a subfolder of the > user home (this is very common in *nix environments). > > > Other options imply to use a different storage type: > > - Use the User Preferences API to store the value. This API is available > starting from Java 1.4. > > - Store it into the JNDI tree. This only works if the JNDI > implementation is writeable and persistent. For example, AFAIK, it will > not work in Tomcat > > - Use a DBMS. It may seem an overkill solution, but there are some very > lightweight databases there. They may be not appropriate for enterprise > solutions, but for a single value they are more than enough. Moreover, > it is possible that you already use one for another service. > > - Use a distributed cache. Another overkill solution, but you may be > already using it for another service, or find out other places where it > may be useful ;-) > > These options, although more complex to implement, bring you an extra > feature. They make your service "distributable", that is, deployable on > a cluster of redundant servers. With local files, each node in the > cluster would have its own "counter". > > Hope this helps, > Rodrigo Ruiz > > Michael McIntosh wrote: > > Your problem seems very similar to mine - It would be great if someone > > would point us to the documentation for the rules related to file access > > (read/write, path, etc.) > > > > Thanks, > > Mike > > > > "M S" <[EMAIL PROTECTED]> wrote on 07/10/2006 10:40:47 AM: > > > >> Hi, > >> > >> I have a web service that is supposed to generate prime numbers. I > >> store the latest generated prime number in a file called prime.txt. > >> So for example, if the program is run and generated 3, 3 will be > >> stored in prime.txt and next time it will generate 5. If there is no > >> prime.txt, the program will generate 1 and try to create prime.txt. > >> > >> My problem is that my web service application does not seem to be > >> able to read/write a file. Any ideas on how this should be done? > >> Notice that the prime.txt must be able to saved for the duration of > >> the web service's lifetime. > >> > >> Regards > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > -- > ------------------------------------------------------------------- > GRIDSYSTEMS Rodrigo Ruiz Aguayo > Parc Bit - Son Espanyol > 07120 Palma de Mallorca mailto:[EMAIL PROTECTED] > Baleares - España Tel:+34-971435085 Fax:+34-971435082 > http://www.gridsystems.com > ------------------------------------------------------------------- > > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.1.394 / Virus Database: 268.9.10/383 - Release Date: 07/07/2006 > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
