Gowtham Potureddi - DEV Community

Gowtham Potureddi

Jul 12

SQL MERGE / UPSERT / ON CONFLICT: Dialect-Aware Idempotent Writes

#pythons #sql #interview #dataengineering

66 min read

Gowtham Potureddi

Jul 11

SQL EXPLAIN ANALYZE Deep Dive: Reading Execution Plans in Postgres, Snowflake, BigQuery

#python #sql #interview #dataengineering

73 min read

Gowtham Potureddi

Jul 11

SQL Pagination Done Right: OFFSET / FETCH / LIMIT / Keyset Cursors

#python #sql #interview #dataengineering

72 min read

Gowtham Potureddi

Jul 11

SQL LATERAL Joins & CROSS APPLY: When They Beat Subqueries

#python #sql #interview #dataengineering

60 min read

Gowtham Potureddi

Jul 11

SQL MATCH_RECOGNIZE: Pattern Recognition for Sessions, Funnels & Anomalies

#python #sql #interview #dataengineering

60 min read

Gowtham Potureddi

Jul 10

SQL Gaps & Islands: Sessionization, Streaks & Run-Length Patterns

#python #sql #interview #dataengineering

58 min read

Gowtham Potureddi

Jul 10

SQL JSON Functions: JSON_VALUE, JSON_EXTRACT, JSONB, JSON_TABLE Across Dialects

#python #sql #interview #dataengineering

60 min read

Gowtham Potureddi

Jul 10

SQL PIVOT / UNPIVOT / CROSSTAB Across Dialects (Postgres, Snowflake, BigQuery, SQL Server)

#python #sql #interview #dataengineering

62 min read

Gowtham Potureddi

Jul 10

SQL Recursive CTEs: Hierarchies, Trees, Graph Traversal, Bill-of-Materials

#python #sql #interview #dataengineering

58 min read

Gowtham Potureddi

Jul 10

LLM Evaluation Pipelines: Golden Sets, Cosine Similarity, LLM-as-Judge for Data Teams

#python #sql #interview #dataengineering

86 min read

Gowtham Potureddi

Jul 10

Embeddings Refresh Pipelines: Incremental Updates, Cost, Drift Monitoring

#python #sql #interview #dataengineering

72 min read

Gowtham Potureddi

Jul 10

Online + Offline Feature Store Sync: Freshness Budgets & Backfill Strategies

#python #sql #interview #dataengineering

71 min read

Gowtham Potureddi

Jul 10

Feature Engineering Pipelines: Batch + Streaming Parity, Point-in-Time Correctness

#python #sql #interview #dataengineering

75 min read

Gowtham Potureddi

Jul 8

Apache Beam Programming Guide: PCollections, Windowing, Runners (Dataflow / Flink)

#python #sql #interview #dataengineering

66 min read

Gowtham Potureddi

Jul 8

Flink CDC Connectors: Schema-First Streaming Ingest at Scale

#python #sql #interview #dataengineering

77 min read

Gowtham Potureddi

Jul 8

MongoDB Change Streams: Real-Time Ingest from Document Stores

#python #sql #interview #dataengineering

73 min read

Gowtham Potureddi

Jul 8

ksqlDB: Streaming SQL on Kafka — Still Worth It in 2026?

#python #sql #interview #dataengineering

74 min read

Gowtham Potureddi

Jul 7

Redis Streams for Real-Time Pipelines: Consumer Groups, XADD/XREAD, Persistence

#python #sql #interview #dataengineering

78 min read

Gowtham Potureddi

Jul 7

BigQuery On-Demand vs Editions & Reservations: When Each Pricing Model Wins

#python #sql #interview #dataengineering

71 min read

Gowtham Potureddi

Jul 7

Query Cost Attribution: Tagging, Resource Monitors & Showback for Data Teams

#python #sql #interview #dataengineering

70 min read

Gowtham Potureddi

Jul 7

Warehouse FinOps Compared: Snowflake Credits vs BigQuery Slots vs Databricks DBUs

#python #sql #interview #dataengineering

73 min read

Gowtham Potureddi

Jul 6

Data Clean Rooms: Snowflake, BigQuery, Habu, AWS for Privacy-Safe Joins

#python #sql #interview #dataengineering

75 min read

Gowtham Potureddi

Jul 6

GDPR & DSAR Pipelines: Right-to-Be-Forgotten in the Warehouse

#python #sql #interview #dataengineering

71 min read

Gowtham Potureddi

Jul 6

PII Detection & Masking: Tokenization, Format-Preserving Encryption, Dynamic Masking

#python #sql #interview #dataengineering

78 min read

Gowtham Potureddi

Jul 6

Atlan vs Collibra vs Alation vs DataHub: Data Catalogs Compared for 2026

#python #sql #interview #dataengineering

77 min read

Gowtham Potureddi

Jul 5

Data Contracts: Open Data Contract Standard, Schema Registry & Producer-Consumer SLAs

#python #sql #interview #dataengineering

75 min read

Gowtham Potureddi

Jul 5

Apache NiFi for Data Engineering: Flows, Processors, NiFi Registry

#python #sql #interview #dataengineering

74 min read

Gowtham Potureddi

Jul 5

CDC Patterns: Outbox, Timestamps, Triggers, Log-Based — Which Wins When

#python #sql #interview #dataengineering

74 min read

Gowtham Potureddi

Jul 5

Postgres Snowflake CDC: 5 Architectures Compared (Debezium, Fivetran, Native Streams, etc.)

#python #sql #interview #dataengineering

76 min read

Gowtham Potureddi

Jul 4

Fivetran vs Airbyte vs Stitch vs Hevo: Managed ELT Compared in 2026

#python #sql #interview #dataengineering

79 min read

Gowtham Potureddi

Jul 4

Debezium Deep Dive: Connectors, Snapshot, Schema History, Outbox Pattern

#python #sql #interview #dataengineering

78 min read

Gowtham Potureddi

Jul 4

Airflow 3.x: What's New — Edge Workers, AI/MLops, DAG Versioning

#python #interview #sql #dataengineering

70 min read

Gowtham Potureddi

Jul 4

Airflow Dynamic Task Mapping: Fan-Out at Runtime + Expand / Partial Patterns

#python #sql #interview #dataengineering

66 min read

Gowtham Potureddi

Jul 3

Airflow Deferrable Operators & Triggerer: Cutting Idle Worker Costs by 90%

#python #sql #interview #dataengineering

70 min read

Gowtham Potureddi

Jul 3

Airflow Dataset-Aware Scheduling: Producer/Consumer Triggers Across DAGs

#python #sql #interview #dataengineering

69 min read

Gowtham Potureddi

Jul 3

Airflow TaskFlow API: Decorators, XComs & Functional DAGs for Python-First Pipelines

#python #sql #interview #dataengineering

73 min read

Gowtham Potureddi

Jul 3

dbt Project Performance Tuning: Threads, Build Order, Materialization Choice, defer

#python #sql #interview #dataengineering

68 min read

Gowtham Potureddi

Jul 2

dbt Macros & Jinja Deep Dive: Custom Materializations, Hooks & Adapter Dispatch

#python #sql #interview #dataengineering

61 min read

Gowtham Potureddi

Jul 2

dbt Packages: dbt_utils, dbt_expectations, dbt-codegen, dbt-osmosis — When Each Wins

#python #sql #interview #dataengineering

66 min read

Gowtham Potureddi

Jul 2

dbt Mesh & Multi-Project Architecture: Cross-Team Lineage & Public Models

#python #sql #interview #dataengineering

74 min read

Gowtham Potureddi

Jul 2

dbt Snapshots: SCD-2 Without Writing a Single MERGE Statement

#python #sql #interview #dataengineering

67 min read

Gowtham Potureddi

Jul 1

pgBouncer, PgCat & Connection Pooling for Analytics Workloads

#python #sql #interview #dataengineering

65 min read

Gowtham Potureddi

Jul 1

PostgreSQL Streaming Replication, WAL & Standby Patterns for HA

#python #sql #interview #dataengineering

64 min read

Gowtham Potureddi

Jul 1

PostgreSQL Parallel Queries & Cost-Based Optimizer Internals

#python #sql #interview #dataengineering

49 min read

Gowtham Potureddi

Jul 1

PostgreSQL Partitioning Deep Dive: Range / List / Hash + Native Partition Pruning

#python #sql #interview #dataengineering

57 min read

Gowtham Potureddi

Jun 30

PostgreSQL Logical Replication for CDC: Slots, Publications & Conflict Handling

#python #sql #interview #dataengineering

57 min read

Gowtham Potureddi

Jun 30

PostgreSQL MVCC & VACUUM: Bloat, Wraparound, Autovacuum Tuning in Production

#python #sql #interview #dataengineering

61 min read

Gowtham Potureddi

Jun 30

BigQuery Studio + Gemini: Notebooks, Data Canvas & AI-Assisted SQL

#python #sql #interview #dataengineering

51 min read

Gowtham Potureddi

Jun 30

BigQuery Reservations, Editions & Slot Management: FinOps for Analytics Teams

#python #sql #interview #dataengineering

58 min read

Gowtham Potureddi

Jun 29

BigQuery Partitioning + Clustering: Cost & Performance Tuning Playbook

#python #sql #interview #dataengineering

54 min read

Gowtham Potureddi

Jun 29

BigQuery Materialized Views + BI Engine: Sub-Second Dashboards on Petabytes

#python #sql #interview #dataengineering

61 min read

Gowtham Potureddi

Jun 29

BigQuery ML: Train, Predict, Forecast & Vector Search Entirely in SQL

#python #sql #interview #dataengineering

57 min read

Gowtham Potureddi

Jun 29

BigQuery ML: Train, Predict, Forecast & Vector Search Entirely in SQL

#python #sql #interview #dataengineering

57 min read

Gowtham Potureddi

Jun 29

Snowflake Openflow: Managed Apache NiFi for Ingestion & Connectors

#python #sql #interview #dataengineering

53 min read

Gowtham Potureddi

Jun 28

Snowflake Search Optimization, Clustering Keys & Query Acceleration Service

#python #sql #interview #dataengineering

58 min read

Gowtham Potureddi

Jun 28

Snowflake Hybrid Tables (Unistore): OLTP + OLAP on a Single Engine

#python #sql #interview #dataengineering

57 min read

Gowtham Potureddi

Jun 28

Snowflake Cortex AI Functions: LLMs, Embeddings & Vector Search in SQL

#python #sql #interview #dataengineering

58 min read

Gowtham Potureddi

Jun 28

Snowpark Python: DataFrames, UDFs & Stored Procs Running Inside Snowflake

#python #sql #interview #dataengineering

58 min read

Gowtham Potureddi

Jun 27

Snowflake Dynamic Tables: Declarative Incremental Pipelines vs Materialized Views

#python #sql #interview #dataengineering

58 min read

Gowtham Potureddi

Jun 27

Snowflake Streams & Tasks: Native CDC + Scheduled Transformations for the Warehouse

#python #sql #interview #dataengineering

61 min read