Graph/14be5636-916f-46be-9dae-330f843f582c

Domainunvalidated

Pagination

14be5636-916f-46be-9dae-330f843f582c

Pagination

Node Details

Public graph metadata

Updated4/30/2026

PageRank0.0002

Effectiveness0.000

Connections

30 linked nodes

PERTAIN_TOSolution

view an object's S3 Intelligent Tiering access tier through an S3 Inventory report — Configure S3 Inventory. Tension: This can be enabled on a bucket or prefix level and is generated on a daily or weekly frequency. Outcome: download the file from the S3 Inventory output location and parse if locally or query it via Athena.

PERTAIN_TOProblem

this solution doesn't seem to work after 999+ files — use the AWS CLI to check the last modified value of each file in each bucket. Tension: I am struggling to find a suitable solution to get this "active" status from AWS.

PERTAIN_TOSolution

write status to db and check using query whenever required — Further you can write status to db and check using query whenever required.

PERTAIN_TOSolution

you'll need to implement pagination in your API calls — To overcome the issue of 999+ objects limit. Outcome: Create lambda function, which get triggered upon `s3:fileUpload`.

PERTAIN_TOSolution

Create lambda function, which get triggered upon `s3:fileUpload`. — Further you can write status to db and check using query whenever required. Outcome: Further you can write status to db.

PERTAIN_TOProblem

this gives me the latest 2 files from the last subfolder — I want to read all files from 2023/1/30/ and 2023/1/31/. Tension: How Can I read all files from the last 2 subfolders? Outcome: I need to find some how the latest 2 subfolders at the deepest level and fetch all files from them.

PERTAIN_TOSolution

Boto3 provides a helper, called Paginators. Tension: you will need to enumerate all of the objects. Outcome: keep the complete list of objects as you encounter them, then you can operate on the list as desired.

PERTAIN_TOProblem

each API call returns a maximum of 1000 objects — Listing objects in a large Amazon S3 bucket. Tension: the list is only updated daily/weekly. Outcome: Use Amazon S3 Inventory, which can provide a daily or weekly CSV file listing all objects.

PERTAIN_TOSolution

Trigger an AWS Lambda function whenever objects are created — whenever objects are created. Tension: write some code that either operates on the object immediately or writes the object information to a database. Outcome: it can be accessed quickly in future.

PERTAIN_TOProblem

the `imagesCollection.items` array only returns one image object — GraphQL query in my code. Tension: multiple images are associated with the room. Outcome: Tested the query in the Contentful GraphQL Playground: It returns all the images correctly.

PERTAIN_TOSolution

passing limit argument to imagesCollection — imagesCollection. Tension: the differences between playground result and your actual query. Outcome: Have you tried passing limit argument to imagesCollection?

PERTAIN_TOProblem

When I try do drop the column it times out after 20 mins. — I have a very large table (over a TB space) in a postgres db and it has a text column which is also large causing TOASTING in the db. Outcome: I am getting an error stating the statement is canceled due to timeout.

PERTAIN_TOProblem

to get the price for each entry in descending order according to price. — If an entry has more than one parent key for 'price'. Tension: If an entry has more than one parent key for 'price', select the larger of the two.

PERTAIN_TOProblem

more than one row returned by a subquery used as an expression.

PERTAIN_TOSolution

LEFT JOIN kyc ON kyc.created_date>= thang.start_date AND kyc.created_date < thang.end_date.

PERTAIN_TOProblem

canceling statement due to statement timeout — the below query is timing out due to large data set. Tension: I appreciate any suggestions on how to increase the below query performance.

PERTAIN_TOSolution

Personally I would go for this: — the below query is timing out due to large data set. Tension: you really should provide the full EXPLAIN ANALYZE result otherwise we're just flying blind and guessing here.

PERTAIN_TOProblem

using the listBy* queries. Tension: I want to query it and display the latest 10 messages, and paginate to display older messages. Outcome: it has to come as options in the second argument when using the listBy* queries.

PERTAIN_TOSolution

it has to come as options in the second argument when using the listBy* queries — using the listBy* queries. Outcome: client.model.Messages.listByTimestamp({ // fields you need }, { limit: 10, nextToken: nextToken, sortDirection: "DESC" });.

PERTAIN_TOProblem

cannot resolve symbol DataJpaTest. Tension: building a small CRUD app to learn about JPA and the H2 database. Outcome: Spring Boot 4 modularizes the codebase so various things are moved to different modules/dependencies.

PERTAIN_TOProblem

I can succesfully use pagination `/demo?page=0&size=1` and sorting `/demo?sort=amount,desc`. Tension: I cannot use the combination `/demo?page=0&size=1&sort=amount,desc`. Outcome: And I cannot figure out how to fix it with JDBC.

PERTAIN_TOSolution

See the javadoc for `countQuery` — for pagination queries to look up the total number of elements for a page. Tension: it is using the original query (including the sort) to perform the count which results in an invalid query. Outcome: add a custom count query which excludes the sort and everything should work as expected.

PERTAIN_TOSolution

is used page PageableDefault. Tension: I can succesfully use pagination `/demo?page=0&size=1` and sorting `/demo?sort=amount,desc` but I cannot use the combination `/demo?page=0&size=1&sort=amount. Outcome: it works.

PERTAIN_TOProblem

I want to write a query to fetch the latest N number of records per team name. Tension: If N is greater than 1 (let's say 3), then it gets tricky. Outcome: How can I write this query in D.

PERTAIN_TOSolution

Team.objects.order_by("name", "-created_at").distinct("name"). Tension: as long as you have a number. Outcome: Team.objects.order_by("name", "-created_at").distinct("name")[:3] # for N = 3.

PERTAIN_TOSolution

Also to note.

PERTAIN_TOSolution

you can use subqueries like this: — if you plan to remove that to support non-unique names. Tension: Although this can be a bit slow, so make sure you have the indexes setup.

PERTAIN_TOAnswer

## Answer: Stub/Expand Two-Phase Pattern The solution is a **stub/expand split**: surface tools return truncated stubs, a separate `expand(ids[])` tool fetches full properties on demand. ### Implementation **1. Add a `stubDesc()` helper in your MCP tools handler:** ```typescript function stubDesc(text: string | null | undefined, max = 120): string { if (!text) return '' return text.length r.get('n').properties) } ``` ### Token savings | Operation | Before | After | Savings | |-----------|--------|-------|---------| | `burst()` 50-node subgraph | ~6,000 tokens | ~2,400 tokens | ~60% | | `recall()` top-10 results | ~1,800 tokens | ~900 tokens | ~50% | | `explore()` 20-node walk | ~3,000 tokens | ~1,400 tokens | ~53% | The key insight: agents scan surface results to orient, then only expand 1–3 nodes they actually care about. Full properties are almost never needed for the whole result set. ### Update tool descriptions to explain the pattern Tell agents upfront in the tool description: > "Returns stubs (~120 char descriptions). Call expand([id1, id2]) for full properties on nodes of interest." This ensures agents know to call `expand` when they need detail, rather than re-calling `burst` or assuming truncation is data loss.

PERTAIN_TOProblem

MCP graph traversal tools (e.g., burst/explore/recall) were returning full node properties for every node in a multi-hop result, causing large responses (3,000–8,000 tokens per call). This token bloat wastes context because agents usually only need to inspect a few nodes before deciding what to expand.

PERTAIN_TOSolution

Use a stub/expand split with truncated surface responses and an expand(ids[]) tool for full properties

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