What is rate limiting and how can I enable it in Composr?
Answer
Rate limiting prevents server overload by restricting the number of requests allowed from a single IP address within a specific timeframe. To enable Composr's built-in rate limiting, add the following to your _config.php file:
Static caching drastically improves performance by serving pre-generated pages to bots and guests. This works because these users typically don't require dynamic content. To enable it:
Go to the Installation Options editor (yourbaseurl/config_editor.php). You will need your maintenance password.
Activate the static cache option.
Composr intelligently determines what to cache, and you can further control this via options within the Installation Options. Be aware that enabling static caching may disable eCommerce features for guests unless specifically configured.
If you're having issues with notifications, here are some troubleshooting steps:
Check Email Logs: View the email log (Admin Zone > Audit > E-mail queue/log) to see what notifications have been sent.
Use the SU Feature: Impersonate a member using the SU feature (described in the "Testing access and privileges" tutorial) to view their notification settings and confirm they are set up correctly.
Enable Carbon-copy Email: Configure a "Carbon-copy e-mail address" in the configuration settings to receive copies of all outgoing emails, including notifications. This helps you monitor email delivery.
Verify System Scheduler: Ensure the system scheduler is configured correctly if members are not receiving digest emails.
Check Digest Settings: Confirm that "Enable digest notifications" is enabled in the Messages configuration settings.
Review "Safety listing limit": If a notification has too many categories, members might not see the full selection tree. Adjust the "Safety listing limit" in the configuration settings if necessary.
Can I control which notifications members receive?
Answer
Yes, you can control notification settings through two mechanisms:
Notification Defaults: You can set default notification preferences for all members. You can enable or disable specific notifications and choose the delivery method (Admin Zone > Setup > Notification defaults).
Notification Lock-down: You can force members to receive or prevent them from receiving certain notifications (Admin Zone > Setup > Notification lock-down). This allows you to enforce specific notification policies and manage email volume.
What notification options are available to members?
Answer
Members can choose from a wide range of notifications, including:
Content Updates: Notifications for new or updated content, such as news articles, forum posts, and gallery images.
Private Messages: Alerts for new private messages received.
Friend Requests: Notifications for new friend requests.
Administrative Actions: Alerts for actions taken by site administrators, such as account approvals or content moderation decisions.
Members can choose to receive notifications via:
Email: Notifications sent directly to their email address.
Digest Email: Combined summaries of activity sent in batched emails. This requires the system scheduler and the digest e-mails configuration option to be enabled.
Private Topics: Notifications delivered as private forum topics.
SMS: Notifications sent as text messages (requires configuration and incurs costs).
Web Notifications: Real-time alerts displayed within the Composr interface.
Can I share content like news and banners across the M.S.N.?
Answer
Yes, you can share news by placing it on the central site and using RSS blocks on satellite sites to display it. Banners can be shared by adding them to the central site and configuring satellite sites to use the central site's banner.php script.
What are Composr Clubs and how are they useful for subcommunities?
Answer
Clubs are special usergroups in Conversr (Composr's forum system) designed for creating subcommunities. They come with their own dedicated forums and are managed by members, taking pressure off site staff.
Key features:
No special permissions by default, simplifying permission management.
Members can join and leave like regular usergroups.
How does Composr ensure printed web pages look appropriate?
Answer
Composr uses a combination of approaches to ensure printed web pages have a suitable layout:
Automatic browser behavior: Browsers typically disable background images when printing.
CSS print stylesheets: Composr utilizes CSS to define specific display rules for printed versions of pages, such as removing margins and hiding social media links.
wide_print parameter: This parameter, activated through specific links or specifying it in the URL, further influences page layout for printing.
How can I test my website's compatibility across different browsers and devices?
Answer
Testing your website on different browsers and devices can be challenging due to operating system limitations and device availability. Here are some solutions:
Virtual Machines: Use virtual machines to run different operating systems and test various Internet Explorer versions.
Device Emulation: Use built-in device emulation features in browsers like Chrome to simulate mobile devices.
Online Testing Services: Employ commercial online testing services like BrowserStack to access a wide range of browsers and devices hosted in the cloud.
Real Devices: Conduct testing on physical mobile devices for a more realistic user experience.
What are the recommended desktop settings for viewing a Composr website?
Answer
A minimum screen resolution of 1024x768 is strongly recommended for viewing a Composr website. This is the minimum resolution for which the default theme is designed. Using a lower resolution might lead to display issues or an unsatisfactory browsing experience. As of version 11, smaller resolutions will often trigger the mobile layout automatically (responsiveness) to ensure a better UI for smaller displays.
Composr aims to support all modern browsers, including the latest versions of Chrome, Firefox, Safari, Edge, and Internet Explorer 11. It is designed to work seamlessly with browsers that automatically update, like Chrome and Firefox. For browsers with manual updates, Composr generally supports the last two releases.
While not explicitly supported, Composr will often address bug reports for other popular browsers like Opera, Chromium, and Konqueror. Additionally, Composr strives to provide an accessible experience for text-mode browsers and those designed for users with disabilities.
What is CSS and how does it impact website design?
Answer
CSS (Cascading Style Sheets) is a language used to describe the visual presentation of a web page written in HTML or XHTML. It controls aspects like:
Fonts and typography: Defining font families, sizes, weights, and styles.
Colors and backgrounds: Setting colors for text, backgrounds, borders, and other elements.
Layout and positioning: Controlling the placement and arrangement of elements on a page.
Visual effects: Adding shadows, gradients, transitions, and other visual enhancements.
By separating content structure (XHTML) from visual presentation (CSS), websites become easier to maintain and update. Changes to the design can be made without altering the underlying HTML structure.
Composr utilizes CSS extensively for theming, allowing users to manipulate the website's visual appearance.
Why is understanding XHTML important for website customization?
Answer
XHTML (Extensible HyperText Markup Language) is the language used to structure web page content. It defines the various elements of a webpage, such as headings, paragraphs, images, and links.
Understanding XHTML is crucial for website customization because it allows you to:
Modify page layout: Change the arrangement and positioning of elements on a page.
Add new content: Insert additional text, images, or other multimedia elements.
Customize the appearance of existing elements: Change fonts, colors, sizes, and other visual styles.
Integrate interactive features: Embed JavaScript code for dynamic functionality.
Composr uses XHTML for its templates, allowing users to extensively customize the website's design and layout.
What is the difference between cookies and sessions?
Answer
While both cookies and sessions are used for user identification and maintaining state, there are key differences:
Storage: Cookies are stored on the user's computer, while sessions are stored on the server.
Expiration: Session cookies expire when the browser is closed, while persistent cookies have a set expiration date. Sessions typically expire after a period of inactivity.
Data sensitivity: Sessions are generally used for more sensitive data, as the information is not stored on the user's computer and therefore less likely to be stolen by a hacker.
Composr uses both cookies and sessions. Session cookies are primarily used for user identification (such as anonymously matching a user to a session in the server database), while persistent cookies can be used for remembering login details if the user chooses.
A cookie is a small piece of data that a website stores on a user's computer. It is sent from the user's web browser to the web server each time a page is viewed. Cookies are used for various purposes, including:
User identification: Cookies can be used to identify a specific user, even if they are not logged in. This allows websites to remember user preferences, shopping cart contents, and other information.
Tracking user behavior: Cookies can be used to track user behavior on a website, such as the pages they visit and the links they click. This information can be used to improve the website's design and content.
Advertising: Cookies can be used to deliver targeted advertising to users based on their browsing history.
There are two main types of cookies:
Session cookies: These cookies are temporary and are deleted when the user closes their web browser. They are often used to store information about the user's current session, such as the items in their shopping cart.
Persistent cookies: These cookies are stored on the user's computer for a longer period. They can be used to remember user preferences, such as their login details or language settings.
