Question

在我的应用程序中，我编写了一个方法来检查用户是否有权查看特定页面。在每次访问页面时，都会调用此方法，如果用户没有权限，则会将其发送回主页。

问题是，这种方法减慢了速度。这需要时间来检查并在应用程序中的页面之间移动非常慢。这是方法：

#include <errno.h>
#include <stdio.h>
#include <string.h>

int main(int argc, char *argv[]) {
    FILE *fp, *fpc;
    int ch, last;

    if (argc != 3) {
        printf("usage: enquote filetocopy filetowrite\n");
        exit(1);
    }

    fp = fopen(argv[1], "r");
    if (!fp) {
       fprintf(stderr, "Could not open input file: (%d) %s\n",
               errno, strerror(errno));
        return 2;
    }

    fpc = fopen(argv[2], "w");
    if (!fpc) {
       fprintf(stderr, "Could not open output file: (%d) %s\n",
               errno, strerror(errno));
        return 2;
    }

    last = '\n';  // we are at the beginning of a line
    while ((ch = fgetc(fp)) != EOF) {
        if (last == '\n') {
            fputc('"', fpc);  // " at the beginning of a line
        }
        if (ch == '\n') {
            fputc('"', fpc);  // " at the end of a line
        }
        fputc(ch, fpc);
        last = ch;
    }
    if (last != '\n') {
        // special case: file does not end with a \n
        fputc('"', fpc);  // " at the end of a line
        fputc('\n', fpc);  // put a \n at the end of the output file
    }

    fclose(fp);
    fclose(fpc);
    return 0;
}

以下是我如何称呼该方法：

'users.havePermission'(currentRoute) {
  check(currentRoute, String);
  const loggedInUser = Meteor.user();

  const permissions = {
    home: [ 'superAdmin', 'adviser', 'admin' ],
    'page.1': [ 'superAdmin', 'adviser' ],
    'page.2': [ 'superAdmin', 'adviser', 'admin' ],
    'page.3': [ 'superAdmin', 'adviser', 'admin' ],
    'page.4': [ 'superAdmin', 'adviser' ],
    'page.5': [ 'superAdmin' ],
    'page.6': [ 'superAdmin', 'adviser' ],
    'page.7': [ 'superAdmin', 'admin' ],
    'page.8': [ 'superAdmin', 'admin' ],
    'page.9': [ 'superAdmin' ],
    'page.10': [ 'superAdmin', 'adviser', 'admin' ],
    'page.11': [ 'superAdmin' ],
    'page.12': [ 'superAdmin' ],
    'page.13': [ 'superAdmin', 'admin' ],
    'page.14': [ 'superAdmin' ],
    'page.15': [ 'superAdmin', 'admin' ],
    'page.16': [ 'superAdmin' ],
    'page.17': [ 'superAdmin', 'admin' ],
    'page.18': [ 'superAdmin' ],
    'page.19': [ 'superAdmin' ],
    'page.20': [ 'superAdmin', 'adviser', 'admin' ]
  };

  const permissionForCurrentRoute = permissions[currentRoute];

  return Roles.userIsInRole(loggedInUser, permissionForCurrentRoute);
}

奇怪的是，这种方法有时（并非所有时间）都会返回一个像Meteor.call('users.havePermission', currentRoute, (error, userHavePermission) => { if (!userHavePermission) { // If not, send directly to the home page without any warning.. Boom! FlowRouter.redirect('/'); } else { // If everything is in order, let him pass! const userName = loggedInUser.profile.name; const loggedInUserEmail = loggedInUser.emails[0].address; LocalState.set('LOGGED_IN_USER_EMAIL', loggedInUserEmail); const isAdmin = loggedInUser.roles.includes('admin'); const isSuperAdmin = loggedInUser.roles.includes('superAdmin'); onData(null, {notifications, userName, currentRoute, isAdmin, isSuperAdmin, uuid, RouteTransition}); return clearAllNotifications; } });这样可能导致延迟的错误。不知道。

我的主要问题是，是否可以通过在服务器上缓存来加快速度？我该怎么办？

如何在服务器上缓存方法流星的结果？

0 个答案: