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ghost/core/server/models/index.js
Kevin Ansfield 80af56b530
Store email batch and recipient records when sending newsletters (#12195)
requires https://github.com/TryGhost/Ghost/pull/12192

- added initial `EmailBatch` and `EmailRecipient` model definitions with defaults and relationships
- added missing `post` relationship function to email model
- fetch member list without bookshelf
    - bookshelf can add around 3x overhead when fetching the members list for an email
    - we don't need full members at this point, only having the data is fine
    - if we need full models later on we can push the model hydration into background jobs where recipient batches are fetched ready for an email to be sent
    - bookshelf model instantiation of many models blocks the event loop, using knex directly keeps concurrent requests fast
- store recipient list before sending email
    - chunk already-fetched members list into batches and insert records into the `email_recipients` table via knex
    - chunked into batches of 1000 to match the number of emails that Mailgun accepts in a single API request but this may not be the absolute fastest batch size for recipient insertion:
        | Batch size | Batch time | Total time |
        | ---------- | ---------- | ---------- |
        |        500 |       20ms |     4142ms |
        |       1000 |       50ms |     4651ms |
        |       5000 |      170ms |     3540ms |
        |      10000 |      370ms |     3684ms |
    - create an email_batch record before inserting recipient rows so we can effeciently fetch recipients by batch and store the overall batch status
2020-09-14 15:40:00 +01:00

53 lines
785 B
JavaScript

/**
* Dependencies
*/
const _ = require('lodash');
// enable event listeners
require('./base/listeners');
/**
* Expose all models
*/
exports = module.exports;
const models = [
'permission',
'post',
'role',
'settings',
'session',
'tag',
'tag-public',
'user',
'author',
'invite',
'webhook',
'integration',
'api-key',
'mobiledoc-revision',
'member',
'action',
'posts-meta',
'member-stripe-customer',
'stripe-customer-subscription',
'email',
'email-batch',
'email-recipient',
'label'
];
function init() {
exports.Base = require('./base');
models.forEach(function (name) {
_.extend(exports, require('./' + name));
});
}
/**
* Expose `init`
*/
exports.init = init;