HBase HA

HBase High Availability (HA) is a feature that ensures the availability of the HBase database even in the event of hardware or software failures. It involves having multiple instances of HBase running across different nodes, where one example acts as the primary (active) and another as the standby (passive). The primary model handles read and write operations while the standby instance stays synchronized with the direct representative to take over in case of a failure.

To ensure that emails you send, including course information, don’t end up in spam folders when sending in bulk, consider the following tips:

1. Use a Reliable Email Service Provider: Choose a reputable email service provider with a good reputation for delivering legitimate emails.
2. Authenticate Your Domain: Set up DomainKeys Identified Mail (DKIM) and Sender Policy Framework (SPF) records for your domain. These authentication mechanisms help email providers verify the legitimacy of your emails.
3. Segment Your Recipients: Divide your recipient list into smaller segments and send emails in batches. This can help prevent being flagged as spam by email providers.
4. Avoid Spam Triggers: Craft your email content carefully to avoid common spam triggers, such as using excessive capitalization, multiple exclamation marks, and specific keywords often associated with spam.
5. Provide Clear Opt-out Instructions: Include a straightforward way for recipients to opt out of receiving future emails from you. This can help build trust and reduce the likelihood of your emails being marked as spam.
6. Monitor Deliverability: Keep an eye on your email deliverability rates and any bounce-backs. Clean your email list by removing invalid email addresses if you notice a high bounce rate.
7. Test Before Sending: Send test emails to yourself or a small group before sending them to the entire list. This helps you identify any potential formatting or content issues that trigger spam filters.
8. Avoid Attachments and Suspicious Links: While sending course information, avoid attaching files that might trigger spam filters. Also, avoid including suspicious or unfamiliar links in your emails.

Remember that while these tips can help improve your email deliverability, there’s no foolproof method to guarantee that your emails won’t ever end up in spam folders.