python - Caching system for dynamically created files? -

-

I have a web server that is dynamically making different reports in different formats (PDF and doctor files). The files are required to be generated in a reasonable amount of CPU, and are quite common in situations where two people are making similar reports with the same input.

Input:

  • Version of the report creation tool
    • / ul>

    When a user tries to generate a report, I would like to check to see if a file exists with the already existing input, and if so If a file is not already available, then I would like to generate it as needed.

    1. What solutions are already present? I have cached simple HTTP requests before, but the keys are very simple (usually the database id)

    2. If I have to do this, then what is the best way to input several hundred words And I was thinking how I should go about changing the strings in the key sent in the cache.

      // The whole input uses a lot of memory, a mapping cache ['one two three four five six seven eight nine ten eleven ...'] / / low keys cache ['a'] => 5 results, then I should do it less

    3. Is there something that should be done in a database, or this better web app code (Python in my case) )

    Thank you to all.

This is Apache.

Create a directory that reports.

Configure Apache to serve files from that directory.

If the report is present, redirect to the URL that will serve Apache.

Otherwise, the report is not present, so create it then redirect to a URL that will serve Apache.

There is no "hashing" you have a key ("string (equations, numbers and word lists), arbitrary length, about 99% less than 200 words") and a value That's a file. Do not waste time on a hash You just have a long key.

You can make this key by making a "Slug" to a certain extent: Remove the punctuation, replace the empty space with _, the kind of thing.

You should create an internal surrogate key which is a simple integer.

You are simply translating a long key into a "report" that exists as a file or will be created as a file.


Comments

Post a Comment

Popular posts from this blog

MySql variables and php -

-
I am getting an error with php in order to format mysql_query () in php to format this string What is the right way? SELECT SELECT SELECT (*) Agents @AgentCount; User_Agent_English, User_Angent_Oursal, US.___Gent_Aginal, COUNT (User_Agent_Percade) ACC, COUNT (*) / (AgentCount) Percentage by agents user_agent_preser order DEC limit limit 50; In PHP, how am i setting $ query $ query = "SELECT count (*) agents @ agentcount; SELECT user_agent_parsed, User_agent_original , COUNT (user_agent_parsed) ascount, COUNT (*) / (@AgentCount) as a percentage by user_agent_parced by URI date DESC limit 50 "; This exact query will work properly if I put it in MySQL directly through a command line session. Do I need to release two separate php calls from mysql_query () and store the results first? I get the following error: There is an error in your SQL syntax; Instead of using a sub-selection and instead of using the 'SELECT user_agent_parsed, user_agent_original, ne...
Read more

url rewriting - How to implement the returnurl like SO in PHP? -

-
This URL should work even after the rewrite. Is this possible? Otherwise, I can only hardcoded everything If you are trying to create a login system with redirection You need to use the HTTP_REFERER header to find out where the user came from so that you can send it back there. The best way to do this is to use something like this in your login form: // - Login php & Lt; Input type = "password" name = "password" /> & Lt; Input type = "hidden" name = "returnrelale" value = "& lt ;? php echo $ redirectURL ;? & gt;" / & Gt; & Lt; / Form & gt; Please note that some ISP, browser or proxy will delete the referrer header, so you can not rely on each user to work fully. If you use a statement, to check whether the header exists or not, you can send those users back to the homepage or whatever. Edit If you are looking to use $ _SERVER ['REQUEST_URI'], if you are running Apache It sho...
Read more

Which Python client library should I use for CouchdB? -

-
I am starting to experiment with CouchDB because it looks like we have the right solution to certain problems That all the work will be on a new project, which does not have any legacy dependency, which the client library will suggest you use, and why? If we overlap any of the OS. Freeband is available only in the collection of its ports, but asks to use the library's project website. None of those people are Ubuntu, which is only with ships, since those two OSAs are not common in libraries, I am probably installing something from source (and hopefully if I have time, then Ubuntu and FreeBSD People pack the package). For those interests, I want to use CouchDB as a convenient intermediate storage space for data passed between different services - think of a message bus system, but less formalities with. For example, we have daemons that download and pars the web page, then send an interesting bit to other daemons for further processing. Many of them are ill-defined until the...
Read more