mongodb
MongoDB document database with flexible schema and horizontal scaling
Quellinformationen
- Repository
- ffsshhttiikk/opencode-agents-skills
- Letzte Quellaktivität
- 28. Februar 2026 um 22:52
- Erkannte Sprache von SKILL.md
- Englisch
- Sterne
- 3
- Forks
- 2
Installationsoptionen
Standardmäßig ist der Prompt ausgewählt, der zuerst die Quelle prüft. Sie können zu einem direkten Befehl wechseln oder eine lokale Kopie herunterladen.
Quelldateien prüfen
Lesen Sie SKILL.md und alle von SkillsMP angezeigten Begleitdateien, bevor Sie sich für eine Installation entscheiden.
SKILL.md wird angezeigt
SKILL.md
Quellanweisungen · Schreibgeschützte Vorschau- name
- mongodb
- description
- MongoDB document database with flexible schema and horizontal scaling
- license
- MIT
- compatibility
- opencode
- metadata
- {"audience":"developers","category":"databases"}
## What I do
- Design document schemas
- Write aggregation pipelines
- Use indexes for performance
- Implement data modeling patterns
- Work with change streams
- Use transactions across collections
- Optimize queries
## When to use me
When building applications with flexible schemas or high write throughput.
## CRUD Operations
```javascript
// Insert
db.users.insertOne({
name: "John",
email: "john@example.com",
tags: ["developer", "admin"],
profile: { age: 30, city: "NYC" }
});
db.users.insertMany([
{ name: "Alice" },
{ name: "Bob" }
]);
// Query
db.users.find({ name: "John" });
db.users.findOne({ _id: ObjectId("...") });
// Update
db.users.updateOne(
{ _id: ObjectId("...") },
{ $set: { name: "Jane" } }
);
db.users.updateMany(
{ status: "active" },
{ $set: { verified: true } }
);
// Delete
db.users.deleteOne({ _id: ObjectId("...") });
db.users.deleteMany({ status: "inactive" });
```
## Query Operators
```javascript
// Comparison
db.products.find({ price: { $gt: 100, $lt: 500 } });
db.users.find({ age: { $gte: 18, $lte: 30 } });
// Logical
db.users.find({
$or: [{ status: "active" }, { role: "admin" }]
});
db.users.find({
$and: [
{ status: "active" },
{ role: { $ne: "guest" } }
]
});
// Element
db.users.find({ email: { $exists: true, $type: "string" } });
// Array
db.users.find({ tags: "developer" });
db.users.find({ tags: { $all: ["admin", "developer"] } });
db.users.find({ "profile.city": "NYC" });
// Regex
db.users.find({ name: { $regex: "^J", $options: "i" } });
```
## Aggregation Pipeline
```javascript
db.orders.aggregate([
// Match
{ $match: { status: "completed" } },
// Unwind array
{ $unwind: "$items" },
// Group
{ $group: {
_id: "$customer_id",
total: { $sum: "$items.price" },
count: { $sum: 1 }
}},
// Sort
{ $sort: { total: -1 } },
// Limit
{ $limit: 10 },
// Project (select fields)
{ $project: {
_id: 0,
customer: "$_id",
total: 1,
count: 1
}}
]);
```
## More Aggregation
```javascript
// Lookup (join)
db.orders.aggregate([
{
$lookup: {
from: "users",
localField: "user_id",
foreignField: "_id",
as: "user"
}
},
{ $unwind: "$user" }
]);
// Add computed fields
{
$addFields: {
total: { $sum: "$items.price" },
discount: {
$cond: { if: { $gte: ["$total", 100] }, then: 0.1, else: 0 }
}
}
}
// Facet (multiple aggregations)
{
$facet: {
byStatus: [{ $group: { _id: "$status", count: { $sum: 1 } } }],
totalValue: [{ $group: { _id: null, total: { $sum: "$total" } } }]
}
}
```
## Indexes
```javascript
// Single field
db.users.createIndex({ email: 1 });
// Compound
db.orders.createIndex({ user_id: 1, created_at: -1 });
// Unique
db.users.createIndex({ email: 1 }, { unique: true });
// Text
db.articles.createIndex({ title: "text", content: "text" });
db.articles.find({ $text: { $search: "mongodb" } });
// Partial
db.users.createIndex(
{ email: 1 },
{ partialFilterExpression: { verified: true } }
);
// Explain
db.users.find({ name: "John" }).explain("executionStats");
```
## Data Modeling
```javascript
// Embedded (one-to-one)
{
_id: ObjectId("..."),
name: "John",
address: {
street: "123 Main St",
city: "NYC"
}
}
// Embedded (one-to-many)
{
_id: ObjectId("..."),
name: "John",
orders: [
{ id: 1, total: 100 },
{ id: 2, total: 200 }
]
}
// Reference (many-to-many)
{
_id: ObjectId("..."),
name: "Math 101",
student_ids: [ObjectId("..."), ObjectId("...")]
}
```
Auf GitHub ansehen